diff --git a/libsearch/app-db-common.h b/libsearch/app-db-common.h
index c8ef2dd..fba443b 100644
--- a/libsearch/app-db-common.h
+++ b/libsearch/app-db-common.h
@@ -18,16 +18,16 @@ struct AppInfoResult
     QString firstLetter;
     QString category;
     int top;
-    int favorate;
+    int favorite;
     int launchTimes;
     int lock;
 
-    AppInfoResult() : top(0), favorate(0), launchTimes(0), lock(0) {}
+    AppInfoResult() : top(0), favorite(0), launchTimes(0), lock(0) {}
     friend QDBusArgument &operator << (QDBusArgument &argument, const AppInfoResult &infoResult)
     {
         argument.beginStructure();
         argument << infoResult.desktopPath << infoResult.iconName << infoResult.appLocalName << infoResult.firstLetter
-                 << infoResult.category << infoResult.top << infoResult.favorate << infoResult.launchTimes << infoResult.lock;
+                 << infoResult.category << infoResult.top << infoResult.favorite << infoResult.launchTimes << infoResult.lock;
         argument.endStructure();
         return argument;
     }
@@ -36,7 +36,7 @@ struct AppInfoResult
     {
         argument.beginStructure();
         argument >> infoResult.desktopPath >> infoResult.iconName >> infoResult.appLocalName >> infoResult.firstLetter
-                 >> infoResult.category >> infoResult.top >> infoResult.favorate >> infoResult.launchTimes >> infoResult.lock;
+                 >> infoResult.category >> infoResult.top >> infoResult.favorite >> infoResult.launchTimes >> infoResult.lock;
 
         argument.endStructure();
         return argument;
diff --git a/libsearch/appdata/app-info-table-private.h b/libsearch/appdata/app-info-table-private.h
index c0ef60d..6449993 100644
--- a/libsearch/appdata/app-info-table-private.h
+++ b/libsearch/appdata/app-info-table-private.h
@@ -19,21 +19,10 @@ public:
     bool setAppFavoritesState(QString &desktopfp, size_t num);
     bool setAppTopState(QString &desktopfp, size_t num);
 
-    //下面三个暂时未封装
-    bool setAppLaunchTimes(QString &desktopfp, size_t num);
-    bool updateAppLaunchTimes(QString &desktopfp);
-    bool setAppLockState(QString &desktopfp, size_t num);
-
     //拖动改变置顶和收藏应用位置
     bool changeFavoriteAppPos(const QString &desktopfp, size_t pos);
     bool changeTopAppPos(const QString &desktopfp, size_t pos);
 
-    bool getAllAppDesktopList(QStringList &list);
-    bool getFavoritesAppList(QStringList &list);
-    bool getTopAppList(QStringList &list);
-    bool getLaunchTimesAppList(QStringList &list);
-    bool getAppCategory(QString &desktopfp, QString &category);
-
     //获取所有应用信息并存到一个结构体中
     bool getAppInfoResults(QVector<AppInfoResult> &appInfoResults);
 
@@ -42,6 +31,7 @@ public:
     bool getAppTopState(QString &desktopfp, size_t &num);
     bool getAppLaunchedState(QString &desktopfp, size_t &num);
     bool getAppFavoriteState(QString &desktopfp, size_t &num);
+    bool getAppCategory(QString &desktopfp, QString &category);
 
     //添加快捷方式
     bool addAppShortcut2Desktop(QString &desktopfp);
@@ -51,10 +41,21 @@ public:
     bool searchInstallApp(QString &keyWord, QStringList &installAppInfoRes);
     bool searchInstallApp(QStringList &keyWord, QStringList &installAppInfoRes);
 
+    //卸载应用
     bool uninstallApp(QString &desktopfp);
 
+    //数据库错误信息
     QString lastError(void) const;
 
+    //下面的接口都不外放，暂时没啥用
+    bool setAppLaunchTimes(QString &desktopfp, size_t num);
+    bool updateAppLaunchTimes(QString &desktopfp);
+    bool setAppLockState(QString &desktopfp, size_t num);
+    bool getAllAppDesktopList(QStringList &list);
+    bool getFavoritesAppList(QStringList &list);
+    bool getTopAppList(QStringList &list);
+    bool getLaunchTimesAppList(QStringList &list);
+
 private:
     ~AppInfoTablePrivate();
     bool initDateBaseConnection();
diff --git a/libsearch/appdata/app-info-table.cpp b/libsearch/appdata/app-info-table.cpp
index 2717745..d99b881 100644
--- a/libsearch/appdata/app-info-table.cpp
+++ b/libsearch/appdata/app-info-table.cpp
@@ -61,6 +61,13 @@ bool AppInfoTablePrivate::setAppFavoritesState(QString &desktopfp, size_t num)
             qWarning() << "Failed to commit !" << cmd;
             m_database.rollback();
             res = false;
+        } else {
+            QVector<AppInfoResult> results;
+            AppInfoResult info;
+            info.desktopPath = desktopfp;
+            info.favorite = num;
+            results.append(std::move(info));
+            Q_EMIT q->appDBItems2BUpdate(results);
         }
     } else {
         qWarning() << "Failed to start transaction mode!!!";
@@ -86,94 +93,13 @@ bool AppInfoTablePrivate::setAppTopState(QString &desktopfp, size_t num)
             qWarning() << "Failed to commit !" << cmd;
             m_database.rollback();
             res = false;
-        }
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-    return res;
-}
-
-bool AppInfoTablePrivate::setAppLaunchTimes(QString &desktopfp, size_t num)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QString cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LAUNCH_TIMES=%1, LAUNCHED=%2 WHERE DESKTOP_FILE_PATH='%3'")
-                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
-                .arg(num)
-                .arg(1)
-                .arg(desktopfp);
-        if (!sql.exec(cmd)) {
-            qWarning() << "Set app favorites state failed!" << m_database.lastError();
-            res = false;
-        }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
-        }
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-    return res;
-}
-
-bool AppInfoTablePrivate::updateAppLaunchTimes(QString &desktopfp)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QString cmd = QString("SELECT LAUNCH_TIMES FROM appInfo WHERE DESKTOP_FILE_PATH='%1'").arg(desktopfp);
-        if (sql.exec(cmd)) {
-            if (sql.next()) {
-                cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LAUNCH_TIMES=%1, LAUNCHED=%2 WHERE DESKTOP_FILE_PATH='%3'")
-                        .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
-                        .arg(sql.value(0).toInt() + 1)
-                        .arg(1)
-                        .arg(desktopfp);
-                if (!sql.exec(cmd)) {
-                    qWarning() << "Set app favorites state failed!" << m_database.lastError();
-                    res = false;
-                }
-            } else {
-                qWarning() << "Failed to exec next!" << cmd;
-                res = false;
-            }
         } else {
-            qWarning() << "Failed to exec:" << cmd;
-            res = false;
-        }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
-        }
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-    return res;
-}
-
-bool AppInfoTablePrivate::setAppLockState(QString &desktopfp, size_t num)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QString cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LOCK=%1 WHERE DESKTOP_FILE_PATH='%2'")
-                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
-                .arg(num)
-                .arg(desktopfp);
-        if (!sql.exec(cmd)) {
-            qWarning() << "Set app favorites state failed!" << m_database.lastError();
-            res = false;
-        }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
+            QVector<AppInfoResult> results;
+            AppInfoResult info;
+            info.desktopPath = desktopfp;
+            info.top = num;
+            results.append(std::move(info));
+            Q_EMIT q->appDBItems2BUpdate(results);
         }
     } else {
         qWarning() << "Failed to start transaction mode!!!";
@@ -188,14 +114,17 @@ bool AppInfoTablePrivate::changeFavoriteAppPos(const QString &desktopfp, size_t
     if (m_database.transaction()) {
         QSqlQuery sql(m_database);
         QString cmd = QString("SELECT FAVORITES FROM appInfo WHERE DESKTOP_FILE_PATH = %0").arg(desktopfp);
+        int previousPos = 0;
+
         //记录应用原位置
         if (!sql.exec(cmd)) {
             qWarning() << "Fail to change favorite-app pos, because: " << m_database.lastError() << " when exec :" << cmd;
             res = false;
         } else {
             if (sql.next()) {
+                previousPos = sql.value(0).toInt();
                 cmd = QString("UPDATE appInfo SET FAVORITES = FAVORITES + 1 WHRER FAVORITES > %1 AND FAVORITES < %2")
-                              .arg(sql.value(0).toUInt())
+                              .arg(previousPos)
                               .arg(pos);
             } else {
                 qWarning() << "Fail to change favorite-app pos when exec next, because: " << m_database.lastError();
@@ -220,6 +149,22 @@ bool AppInfoTablePrivate::changeFavoriteAppPos(const QString &desktopfp, size_t
             qWarning() << "Failed to commit when exec: " << cmd;
             m_database.rollback();
             res = false;
+        } else {
+            cmd = QString("SELECT DESKTOP_FILE_PATH, FAVORITES FROM appInfo WHERE FAVORITES > %1 AND FAVORITES < %2")
+                    .arg(previousPos)
+                    .arg(pos);
+            if (!sql.exec(cmd)) {
+                qWarning() << "I'm going to send update favorites signal but fail to exec" << cmd;
+            } else {
+                QVector<AppInfoResult> results;
+                while (sql.next()) {
+                    AppInfoResult info;
+                    info.desktopPath = sql.value("DESKTOP_FILE_PATH").toString();
+                    info.favorite = sql.value("FAVORITES").toInt();
+                    results.append(std::move(info));
+                }
+                Q_EMIT q->appDBItems2BUpdate(results);
+            }
         }
 
     } else {
@@ -236,14 +181,17 @@ bool AppInfoTablePrivate::changeTopAppPos(const QString &desktopfp, size_t pos)
     if (m_database.transaction()) {
         QSqlQuery sql(m_database);
         QString cmd = QString("SELECT TOP FROM appInfo WHERE DESKTOP_FILE_PATH = %0").arg(desktopfp);
+        int previousPos = 0;
+
         //记录应用原位置
         if (!sql.exec(cmd)) {
             qWarning() << "Fail to change top-app pos, because: " << m_database.lastError() << " when exec :" << cmd;
             res = false;
         } else {
             if (sql.next()) {
+                previousPos = sql.value(0).toInt();
                 cmd = QString("UPDATE appInfo SET TOP = TOP + 1 WHRER TOP > %1 AND TOP < %2")
-                              .arg(sql.value(0).toUInt())
+                              .arg(previousPos)
                               .arg(pos);
             } else {
                 qWarning() << "Fail to change top-app pos when exec next, because: " << m_database.lastError();
@@ -268,139 +216,29 @@ bool AppInfoTablePrivate::changeTopAppPos(const QString &desktopfp, size_t pos)
             qWarning() << "Failed to commit when exec: " << cmd;
             m_database.rollback();
             res = false;
-        }
-
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-
-    return res;
-}
-
-bool AppInfoTablePrivate::getAllAppDesktopList(QStringList &list)
-{
-    bool res(true);
-    QSqlQuery sql(m_database);
-    QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo");
-
-    if (sql.exec(cmd)) {
-        while (sql.next()) {
-            list.append(sql.value(0).toString());
-        }
-    } else {
-        qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-        res = false;
-    }
-
-    return res;
-}
-
-bool AppInfoTablePrivate::getFavoritesAppList(QStringList &list)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QSqlQuery sqlque(m_database);
-        QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo WHERE FAVORITES!=0 ORDER BY FAVORITES");
-        int count = 0;
-        if (sql.exec(cmd)) {
-            while (sql.next()) {
-                list.append(sql.value(0).toString());
-                cmd = QString("UPDATE appInfo SET FAVORITES=%1 WHERE DESKTOP_FILE_PATH='%2'")
-                        .arg(++count)
-                        .arg(sql.value(0).toString());
-                if (!sqlque.exec(cmd)) {
-                    qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-                    res = false;
-                    break;
-                }
-            }
         } else {
-            qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-            res = false;
-        }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
-        }
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-    return res;
-}
-
-bool AppInfoTablePrivate::getTopAppList(QStringList &list)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QSqlQuery sqlque(m_database);
-        QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo WHERE TOP!=0 ORDER BY TOP");
-        int count = 0;
-        if (sql.exec(cmd)) {
-            while (sql.next()) {
-                list.append(sql.value(0).toString());
-                cmd = QString("UPDATE appInfo SET TOP=%1 WHERE DESKTOP_FILE_PATH='%2'")
-                        .arg(++count)
-                        .arg(sql.value(0).toString());
-                if (!sqlque.exec(cmd)) {
-                    qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-                    res = false;
-                    break;
+            cmd = QString("SELECT DESKTOP_FILE_PATH, TOP FROM appInfo WHERE TOP > %1 AND TOP < %2")
+                    .arg(previousPos)
+                    .arg(pos);
+            if (!sql.exec(cmd)) {
+                qWarning() << "I'm going to send update top signal but fail to exec" << cmd;
+            } else {
+                QVector<AppInfoResult> results;
+                while (sql.next()) {
+                    AppInfoResult info;
+                    info.desktopPath = sql.value("DESKTOP_FILE_PATH").toString();
+                    info.favorite = sql.value("TOP").toInt();
+                    results.append(std::move(info));
                 }
+                Q_EMIT q->appDBItems2BUpdate(results);
             }
-        } else {
-            qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-            res = false;
         }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
-        }
-    } else {
-        qWarning() << "Failed to start transaction mode!!!";
-        res = false;
-    }
-    return res;
-}
 
-bool AppInfoTablePrivate::getLaunchTimesAppList(QStringList &list)
-{
-    bool res(true);
-    if (m_database.transaction()) {
-        QSqlQuery sql(m_database);
-        QSqlQuery sqlque(m_database);
-        QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo ORDER BY LAUNCH_TIMES");
-        int count = 0;
-        if (sql.exec(cmd)) {
-            while (sql.next()) {
-                list.append(sql.value(0).toString());
-                cmd = QString("UPDATE appInfo SET TOP=%1 WHERE DESKTOP_FILE_PATH='%2'")
-                        .arg(++count)
-                        .arg(sql.value(0).toString());
-                if (!sqlque.exec(cmd)) {
-                    qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-                    res = false;
-                    break;
-                }
-            }
-        } else {
-            qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
-            res = false;
-        }
-        if (!m_database.commit()) {
-            qWarning() << "Failed to commit !" << cmd;
-            m_database.rollback();
-            res = false;
-        }
     } else {
         qWarning() << "Failed to start transaction mode!!!";
         res = false;
     }
+
     return res;
 }
 
@@ -448,7 +286,7 @@ bool AppInfoTablePrivate::getAppInfoResults(QVector<AppInfoResult> &appInfoResul
                 result.iconName = sql.value(2).toString();
                 result.category = sql.value(3).toString();
                 result.top = sql.value(4).toInt();
-                result.favorate = sql.value(5).toInt();
+                result.favorite = sql.value(5).toInt();
                 result.launchTimes = sql.value(6).toInt();
                 result.lock = sql.value(7).toInt();
                 result.firstLetter = sql.value(8).toString();
@@ -715,7 +553,13 @@ bool AppInfoTablePrivate::searchInstallApp(QStringList &keyWord, QStringList &in
 bool AppInfoTablePrivate::uninstallApp(QString &desktopfp)
 {
     bool res(false);
+    QString cmd = QString("kylin-uninstaller %1")
+                          .arg(desktopfp.toLocal8Bit().data());
+    res = QProcess::startDetached(cmd);
+    qDebug() << "kylin-uninstaller uninstall：" << cmd << res;
+    return res;
 
+    /*
     bool isOsReleaseUbuntu(false);
     QFile file("/etc/os-release");
     if (file.open(QFile::ReadOnly)) {
@@ -744,8 +588,8 @@ bool AppInfoTablePrivate::uninstallApp(QString &desktopfp)
         res = QProcess::startDetached(cmd);
         qDebug() << "dpkg -S uninstall：" << cmd << res;
     }
-
     return res;
+    */
 }
 
 QString AppInfoTablePrivate::lastError() const
@@ -753,6 +597,182 @@ QString AppInfoTablePrivate::lastError() const
     return m_database.lastError().text();
 }
 
+bool AppInfoTablePrivate::setAppLaunchTimes(QString &desktopfp, size_t num)
+{
+    bool res(true);
+    if (m_database.transaction()) {
+        QSqlQuery sql(m_database);
+        QString cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LAUNCH_TIMES=%1, LAUNCHED=%2 WHERE DESKTOP_FILE_PATH='%3'")
+                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
+                .arg(num)
+                .arg(1)
+                .arg(desktopfp);
+        if (!sql.exec(cmd)) {
+            qWarning() << "Set app favorites state failed!" << m_database.lastError();
+            res = false;
+        }
+        if (!m_database.commit()) {
+            qWarning() << "Failed to commit !" << cmd;
+            m_database.rollback();
+            res = false;
+        }
+    } else {
+        qWarning() << "Failed to start transaction mode!!!";
+        res = false;
+    }
+    return res;
+}
+
+bool AppInfoTablePrivate::updateAppLaunchTimes(QString &desktopfp)
+{
+    bool res(true);
+    if (m_database.transaction()) {
+        QSqlQuery sql(m_database);
+        QString cmd = QString("SELECT LAUNCH_TIMES FROM appInfo WHERE DESKTOP_FILE_PATH='%1'").arg(desktopfp);
+        if (sql.exec(cmd)) {
+            if (sql.next()) {
+                cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LAUNCH_TIMES=%1, LAUNCHED=%2 WHERE DESKTOP_FILE_PATH='%3'")
+                        .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
+                        .arg(sql.value(0).toInt() + 1)
+                        .arg(1)
+                        .arg(desktopfp);
+                if (!sql.exec(cmd)) {
+                    qWarning() << "Set app favorites state failed!" << m_database.lastError();
+                    res = false;
+                }
+            } else {
+                qWarning() << "Failed to exec next!" << cmd;
+                res = false;
+            }
+        } else {
+            qWarning() << "Failed to exec:" << cmd;
+            res = false;
+        }
+        if (!m_database.commit()) {
+            qWarning() << "Failed to commit !" << cmd;
+            m_database.rollback();
+            res = false;
+        }
+    } else {
+        qWarning() << "Failed to start transaction mode!!!";
+        res = false;
+    }
+    return res;
+}
+
+bool AppInfoTablePrivate::setAppLockState(QString &desktopfp, size_t num)
+{
+    bool res(true);
+    if (m_database.transaction()) {
+        QSqlQuery sql(m_database);
+        QString cmd = QString("UPDATE appInfo SET MODIFYED_TIME='%0', LOCK=%1 WHERE DESKTOP_FILE_PATH='%2'")
+                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
+                .arg(num)
+                .arg(desktopfp);
+        if (!sql.exec(cmd)) {
+            qWarning() << "Set app favorites state failed!" << m_database.lastError();
+            res = false;
+        }
+        if (!m_database.commit()) {
+            qWarning() << "Failed to commit !" << cmd;
+            m_database.rollback();
+            res = false;
+        }
+    } else {
+        qWarning() << "Failed to start transaction mode!!!";
+        res = false;
+    }
+    return res;
+}
+
+bool AppInfoTablePrivate::getAllAppDesktopList(QStringList &list)
+{
+    bool res(true);
+    QSqlQuery sql(m_database);
+    QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo");
+
+    if (sql.exec(cmd)) {
+        while (sql.next()) {
+            list.append(sql.value(0).toString());
+        }
+    } else {
+        qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
+        res = false;
+    }
+
+    return res;
+}
+
+bool AppInfoTablePrivate::getFavoritesAppList(QStringList &list)
+{
+    bool res(true);
+    QSqlQuery sql(m_database);
+    QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo WHERE FAVORITES!=0 ORDER BY FAVORITES");
+    if (sql.exec(cmd)) {
+        while (sql.next()) {
+            list.append(sql.value(0).toString());
+        }
+    } else {
+        qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
+        res = false;
+    }
+    return res;
+}
+
+bool AppInfoTablePrivate::getTopAppList(QStringList &list)
+{
+    bool res(true);
+    QSqlQuery sql(m_database);
+    QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo WHERE TOP!=0 ORDER BY TOP");
+
+    if (sql.exec(cmd)) {
+        while (sql.next()) {
+            list.append(sql.value(0).toString());
+        }
+    } else {
+        qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
+        res = false;
+    }
+
+    return res;
+}
+
+bool AppInfoTablePrivate::getLaunchTimesAppList(QStringList &list)
+{
+    bool res(true);
+    if (m_database.transaction()) {
+        QSqlQuery sql(m_database);
+        QSqlQuery sqlque(m_database);
+        QString cmd = QString("SELECT DESKTOP_FILE_PATH FROM appInfo ORDER BY LAUNCH_TIMES");
+        int count = 0;
+        if (sql.exec(cmd)) {
+            while (sql.next()) {
+                list.append(sql.value(0).toString());
+                cmd = QString("UPDATE appInfo SET TOP=%1 WHERE DESKTOP_FILE_PATH='%2'")
+                        .arg(++count)
+                        .arg(sql.value(0).toString());
+                if (!sqlque.exec(cmd)) {
+                    qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
+                    res = false;
+                    break;
+                }
+            }
+        } else {
+            qWarning() << QString("cmd %0 failed!").arg(cmd) << m_database.lastError();
+            res = false;
+        }
+        if (!m_database.commit()) {
+            qWarning() << "Failed to commit !" << cmd;
+            m_database.rollback();
+            res = false;
+        }
+    } else {
+        qWarning() << "Failed to start transaction mode!!!";
+        res = false;
+    }
+    return res;
+}
+
 AppInfoTablePrivate::~AppInfoTablePrivate()
 {
     this->closeDataBase();
@@ -816,41 +836,6 @@ bool AppInfoTable::setAppTopState(QString &desktopfp, size_t num)
     return d->setAppTopState(desktopfp, num);
 }
 
-bool AppInfoTable::setAppLaunchTimes(QString &desktopfp, size_t num)
-{
-    return d->setAppLaunchTimes(desktopfp, num);
-}
-
-bool AppInfoTable::updateAppLaunchTimes(QString &desktopfp)
-{
-    return d->updateAppLaunchTimes(desktopfp);
-}
-
-bool AppInfoTable::setAppLockState(QString &desktopfp, size_t num)
-{
-    return d->setAppLockState(desktopfp, num);
-}
-
-bool AppInfoTable::getAllAppDesktopList(QStringList &list)
-{
-    return d->getAllAppDesktopList(list);
-}
-
-bool AppInfoTable::getFavoritesAppList(QStringList &list)
-{
-    return d->getFavoritesAppList(list);
-}
-
-bool AppInfoTable::getTopAppList(QStringList &list)
-{
-    return d->getTopAppList(list);
-}
-
-bool AppInfoTable::getLaunchTimesAppList(QStringList &list)
-{
-    return d->getLaunchTimesAppList(list);
-}
-
 bool AppInfoTable::getAppCategory(QString &desktopfp, QString &category)
 {
     return d->getAppCategory(desktopfp, category);
@@ -920,3 +905,39 @@ QString AppInfoTable::lastError() const
 {
     return d->lastError();
 }
+
+//下面接口暂时没啥用，不外放。
+bool AppInfoTable::setAppLaunchTimes(QString &desktopfp, size_t num)
+{
+    return d->setAppLaunchTimes(desktopfp, num);
+}
+
+bool AppInfoTable::updateAppLaunchTimes(QString &desktopfp)
+{
+    return d->updateAppLaunchTimes(desktopfp);
+}
+
+bool AppInfoTable::setAppLockState(QString &desktopfp, size_t num)
+{
+    return d->setAppLockState(desktopfp, num);
+}
+
+bool AppInfoTable::getAllAppDesktopList(QStringList &list)
+{
+    return d->getAllAppDesktopList(list);
+}
+
+bool AppInfoTable::getFavoritesAppList(QStringList &list)
+{
+    return d->getFavoritesAppList(list);
+}
+
+bool AppInfoTable::getTopAppList(QStringList &list)
+{
+    return d->getTopAppList(list);
+}
+
+bool AppInfoTable::getLaunchTimesAppList(QStringList &list)
+{
+    return d->getLaunchTimesAppList(list);
+}
diff --git a/libsearch/appdata/app-info-table.h b/libsearch/appdata/app-info-table.h
index 5ff4e5a..cc3eac4 100644
--- a/libsearch/appdata/app-info-table.h
+++ b/libsearch/appdata/app-info-table.h
@@ -33,33 +33,6 @@ public:
      */
     bool setAppTopState(QString &desktopfp, size_t num);
 
-    /**
-     * @brief AppInfoTable::getAllAppDesktopList
-     * get the desktop file paths of all apps
-     * @param list: a stringlist include all paths
-     * @return bool: true if success, else false
-     */
-    bool getAllAppDesktopList(QStringList &list);
-
-    /**
-     * @brief AppInfoTable::getFavoritesAppList
-     * get all favorites apps
-     * @param list: a stringlist include all apps' paths
-     * @return bool: true if success, else false
-     */
-    bool getFavoritesAppList(QStringList &list);
-
-    /**
-     * @brief AppInfoTable::getTopAppList
-     * get all top apps
-     * @param list: a stringlist include all apps' paths
-     * @return bool: true if success, else false
-     */
-    bool getTopAppList(QStringList &list);
-
-    bool getLaunchTimesAppList(QStringList &list);
-    bool getAppCategory(QString &desktopfp, QString &category);
-
     /**
      * @brief AppInfoTable::changeFavoriteAppPos
      * change the position of the app which is one of the Favorites Apps
@@ -90,6 +63,7 @@ public:
     bool getAppTopState(QString &desktopfp, size_t &num);
     bool getAppLaunchedState(QString &desktopfp, size_t &num);
     bool getAppFavoriteState(QString &desktopfp, size_t &num);
+    bool getAppCategory(QString &desktopfp, QString &category);
 
     bool addAppShortcut2Desktop(QString &desktopfp);
     bool addAppShortcut2Panel(QString &desktopfp);
@@ -107,10 +81,16 @@ public:
     QString lastError(void) const;
 
 private:
+    //暂不外放的接口
     bool setAppLaunchTimes(QString &desktopfp, size_t num);
     bool setAppLockState(QString &desktopfp, size_t num);
     bool updateAppLaunchTimes(QString &desktopfp);
+    bool getAllAppDesktopList(QStringList &list);
+    bool getFavoritesAppList(QStringList &list);
+    bool getTopAppList(QStringList &list);
+    bool getLaunchTimesAppList(QStringList &list);
 
+private:
     AppInfoTablePrivate *d;
 
 Q_SIGNALS:
diff --git a/ukui-search-app-data-service/app-db-manager.cpp b/ukui-search-app-data-service/app-db-manager.cpp
index 1c2ddcf..7fd4174 100644
--- a/ukui-search-app-data-service/app-db-manager.cpp
+++ b/ukui-search-app-data-service/app-db-manager.cpp
@@ -27,7 +27,7 @@ AppDBManager *AppDBManager::getInstance()
     return global_instance;
 }
 
-AppDBManager::AppDBManager(QObject *parent) : QObject(parent), m_database(QSqlDatabase())
+AppDBManager::AppDBManager(QObject *parent) : QThread(parent), m_database(QSqlDatabase())
 {
     //链接数据库
     if (openDataBase()) {
@@ -46,7 +46,7 @@ AppDBManager::AppDBManager(QObject *parent) : QObject(parent), m_database(QSqlDa
         m_qSettings->endGroup();
 
         //初始化数据库
-        initDataBase();
+        refreshDataBase();
 
         //初始化FileSystemWatcher
         m_watchAppDir = new QFileSystemWatcher(this);
@@ -63,23 +63,46 @@ AppDBManager::AppDBManager(QObject *parent) : QObject(parent), m_database(QSqlDa
         }
         m_watchAppDir->addPath(SNAPD_APP_DESKTOP_PATH);
 
-        //监听desktop文件所在目录,TODO:directoryChange会发多次信号，需要计时器阻塞
+        //初始化timer
+        this->start();
+        m_timer = new QTimer();
+        m_maxProcessTimer = new QTimer();
+
+        m_timer->setInterval(2*1000);
+        m_maxProcessTimer->setInterval(5*1000);
+
+        m_timer->setSingleShot(true);
+        m_maxProcessTimer->setSingleShot(true);
+
+        m_timer->moveToThread(this);
+        m_maxProcessTimer->moveToThread(this);
+
+        connect(this, SIGNAL(startTimer()), m_timer, SLOT(start()));
+        connect(this, SIGNAL(maxProcessTimerStart()), m_maxProcessTimer, SLOT(start()));
+        connect(this, &AppDBManager::stopTimer, m_timer, &QTimer::stop);
+        connect(this, &AppDBManager::stopTimer, m_maxProcessTimer, &QTimer::stop);
+
+        //监听desktop文件所在目录，由于directoryChange会发多次信号，使用计时器阻塞
         connect(m_watchAppDir, &QFileSystemWatcher::directoryChanged, this, [ = ](const QString & path) {
             qDebug() << "m_watchAppDir directoryChanged:" << path;
-            if (m_database.transaction()) {
-//                this->updateAppInfoDB();
-                this->updateAllData2DB();
-                if (!m_database.commit()) {
-                    qWarning() << "Failed to commit !";
-                    m_database.rollback();
-                } else {
-                    Q_EMIT this->finishHandleAppDB();
-                }
-            } else {
-                qWarning() << "Failed to start transaction mode!!!";
+            Q_EMIT this->startTimer();
+            if (!m_maxProcessTimer->isActive()) {
+                Q_EMIT this->maxProcessTimerStart();
             }
         });
 
+        //计时器超时统一进行更新操作
+        connect(m_timer, &QTimer::timeout, this, [ & ] {
+            qDebug() << "Time out! Now I can update the database!";
+            Q_EMIT this->stopTimer();
+            this->refreshDataBase();
+        }, Qt::DirectConnection);
+        connect(m_maxProcessTimer, &QTimer::timeout, this, [ & ] {
+            qDebug() << "I've waited too lang, I have to update  the database now!";
+            Q_EMIT this->stopTimer();
+            this->refreshDataBase();
+        }, Qt::DirectConnection);
+
         //监控应用进程开启
         connect(KWindowSystem::self(), &KWindowSystem::windowAdded, [ = ](WId id) {
             QString desktopfp = ConvertWinidToDesktop::getConverter().tranIdToDesktop(id);
@@ -299,6 +322,7 @@ void AppDBManager::loadDesktopFilePaths(QString path, QFileInfoList &infolist)
 
 void AppDBManager::updateAllData2DB()
 {
+    m_dbChanged = false;
     bool firstExec = false;
     QSqlQuery sql(m_database);
     QString cmd = "SELECT DESKTOP_FILE_PATH,MD5 FROM appInfo";
@@ -351,24 +375,28 @@ void AppDBManager::updateAllData2DB()
                     //判断系统语言是否改变
                     if (m_localeChanged) {
                         this->updateLocaleData2DB(path);
+                        m_dbChanged = true;
                     }
                     dataMap.remove(path);
                     continue;
                 } else {
                     //数据库有记录但md5值改变则update
                     this->updateAppDesktopFile2DB(path);
+                    m_dbChanged = true;
                     dataMap.remove(path);
                     continue;
                 }
             } else {
                 //数据库中没有记录则insert
                 this->addAppDesktopFile2DB(path);
+                m_dbChanged = true;
                 dataMap.remove(path);
                 continue;
             }
         }
         //数据库为空则全部insert
         this->addAppDesktopFile2DB(path);
+        m_dbChanged = true;
         dataMap.remove(path);
     }
 
@@ -379,6 +407,7 @@ void AppDBManager::updateAllData2DB()
     if (!dataMap.isEmpty()) {
         for (auto i = dataMap.constBegin(); i != dataMap.constEnd(); i++) {
             this->deleteAppDesktopFile2DB(i.key());
+            m_dbChanged = true;
         }
     }
 }
@@ -420,7 +449,12 @@ bool AppDBManager::updateLocaleData2DB(QString desktopPath)
     return res;
 }
 
-void AppDBManager::initDataBase()
+void AppDBManager::run()
+{
+    exec();
+}
+
+void AppDBManager::refreshDataBase()
 {
     if (m_database.transaction()) {
 //        this->updateAppInfoDB();
@@ -428,6 +462,8 @@ void AppDBManager::initDataBase()
         if (!m_database.commit()) {
             qWarning() << "Failed to commit !";
             m_database.rollback();
+        } else if (!m_dbChanged) {
+            qDebug() << "app DataBase has no changes!";
         } else {
             Q_EMIT this->finishHandleAppDB();
         }
@@ -568,11 +604,37 @@ bool AppDBManager::deleteAppDesktopFile2DB(const QString &desktopfd)
 {
     bool res(true);
     QSqlQuery sql(m_database);
-    QString cmd = QString("DELETE FROM appInfo WHERE DESKTOP_FILE_PATH = '%0'").arg(desktopfd);
+    QString cmd = QString("SELECT FAVORITES, TOP FROM appInfo WHERE DESKTOP_FILE_PATH = '%0'").arg(desktopfd);
+
+    //查询要删除信息的应用是否被收藏或顶置过
+    if (!sql.exec(cmd)) {
+        qWarning() << m_database.lastError() << cmd;
+    } else if (sql.next()) {
+        int favorites = sql.value("FAVORITES").toInt();
+        int top = sql.value("TOP").toInt();
+        if (favorites) {
+            cmd = QString("UPDATE appInfo SET FAVORITES = FAVORITES -1 WHERE FAVORITES > %1").arg(favorites);
+            if (!sql.exec(cmd)) {
+                qWarning() << "I'm going to delete item in db, fail to update the FAVORITES because:" <<  m_database.lastError() << cmd;
+            }
+        }
+        if (top) {
+            cmd = QString("UPDATE appInfo SET TOP = TOP -1 WHERE TOP > %1").arg(top);
+            if (!sql.exec(cmd)) {
+                qWarning() << "I'm going to delete item in db, fail to update the TOP because:" << m_database.lastError() << cmd;
+            }
+        }
+    } else {
+        qWarning() << "Fail to exec next, because" << m_database.lastError() << "while executing " << cmd;
+    }
+
+    //执行删除操作
+    cmd = QString("DELETE FROM appInfo WHERE DESKTOP_FILE_PATH = '%0'").arg(desktopfd);
     if (!sql.exec(cmd)) {
         qWarning() << m_database.lastError() << cmd;
         res = false;
     }
+
     if (res) {
         Q_EMIT this->appDBItemDelete(desktopfd);
         qDebug() << "app database delete " << desktopfd << "success!";
@@ -689,6 +751,7 @@ bool AppDBManager::updateAppLaunchTimes(QString &desktopfp)
                     res = false;
                 } else {
                     AppInfoResult result;
+                    result.desktopPath = desktopfp;
                     result.launchTimes = launchTimes;
                     Q_EMIT this->appDBItemUpdate(result);
                 }
diff --git a/ukui-search-app-data-service/app-db-manager.h b/ukui-search-app-data-service/app-db-manager.h
index 5bd0592..8d51816 100644
--- a/ukui-search-app-data-service/app-db-manager.h
+++ b/ukui-search-app-data-service/app-db-manager.h
@@ -14,6 +14,8 @@
 #include <QFileSystemWatcher>
 #include <QMutex>
 #include <QSettings>
+#include <QTimer>
+#include <QThread>
 
 #define CONNECTION_NAME QLatin1String("ukss-appdb-connection")
 
@@ -36,7 +38,7 @@ public:
     }
 };
 
-class AppDBManager : public QObject
+class AppDBManager : public QThread
 {
     Q_OBJECT
 
@@ -58,6 +60,8 @@ public:
     bool updateAppLaunchTimes(QString &desktopfp);
     void updateAllData2DB();
     bool updateLocaleData2DB(QString desktopPath);
+protected:
+    void run() override;
 
 private:
     explicit AppDBManager(QObject *parent = nullptr);
@@ -65,7 +69,7 @@ private:
 
     void loadDesktopFilePaths(QString path, QFileInfoList &infolist);
 
-    void initDataBase();
+    void refreshDataBase();
     bool openDataBase();
     void closeDataBase();
 
@@ -75,7 +79,12 @@ private:
     void getFilePathList(QStringList &pathList);
 
     QSettings *m_qSettings = nullptr;
+
     bool m_localeChanged;
+    bool m_dbChanged;
+
+    QTimer *m_timer = nullptr;
+    QTimer *m_maxProcessTimer = nullptr;
 
     QSqlDatabase m_database;
 
@@ -131,11 +140,16 @@ private:
         //原本额外排除的目录，不知道额外的原因，有可能之后有问题--bjj20220621
         "/usr/share/applications/screensavers"
     };
+
 Q_SIGNALS:
     void appDBItemUpdate(const AppInfoResult&);
     void appDBItemAdd(const AppInfoResult&);
     void appDBItemDelete(const QString&);
     void finishHandleAppDB();
+
+    void startTimer();
+    void maxProcessTimerStart();
+    void stopTimer();
 };
 }
 
diff --git a/ukui-search-app-data-service/ukui-search-app-data-service.pro b/ukui-search-app-data-service/ukui-search-app-data-service.pro
index a48aa90..e34dd85 100644
--- a/ukui-search-app-data-service/ukui-search-app-data-service.pro
+++ b/ukui-search-app-data-service/ukui-search-app-data-service.pro
@@ -29,13 +29,13 @@ SOURCES += \
         main.cpp \
         convert-winid-to-desktop.cpp \
         app-db-manager.cpp \
-    signal-transformer.cpp \
+        signal-transformer.cpp \
         ukui-search-app-data-service.cpp \
 
 HEADERS += \
         convert-winid-to-desktop.h \
         app-db-manager.h \
-    signal-transformer.h \
+        signal-transformer.h \
         ukui-search-app-data-service.h \
 
 target.path = /usr/bin