diff --git a/libsearch/appdata/application-info.h b/libsearch/appdata/application-info.h
index 3c15acb..2776be3 100644
--- a/libsearch/appdata/application-info.h
+++ b/libsearch/appdata/application-info.h
@@ -32,22 +32,22 @@ public:
     explicit ApplicationInfo(QObject *parent = nullptr);
     ~ApplicationInfo();
     /**
-     * @brief getInfo 查询单个应用的单个属性
-     * @param desktopFile
-     * @param property
+     * @brief ApplicationInfo::getInfo 查询单个应用的单个属性
+     * @param desktopFile: 要查询的应用的desktop文件路径
+     * @param property: 要查询的属性
      * @return
      */
     QVariant getInfo(const QString &desktopFile, ApplicationProperty::Property property);
     /**
-     * @brief getInfo 查询单个应用的多个属性
-     * @param desktopFile
-     * @param properties
+     * @brief ApplicationInfo::getInfo 查询单个应用的多个属性
+     * @param desktopFile: 要查询的应用的desktop文件路径
+     * @param properties: 要查询的属性
      * @return
      */
     ApplicationPropertyMap getInfo(const QString &desktopFile, ApplicationProperties properties);
     /**
-     * @brief getInfo 查询所有应用的多个属性
-     * @param property
+     * @brief ApplicationInfo::getInfo 查询所有应用的多个属性
+     * @param properties: 要查询的属性
      * @return
      */
     ApplicationInfoMap getInfo(ApplicationProperties properties);
@@ -63,8 +63,9 @@ public:
 
     /**
      * @brief ApplicationInfo::searchApp
-     * @param keyWord: the keyword of this search for applications
-     * @param installAppInfoRes: the search results of applications
+     * @param properties: Each application's information should contain these properties
+     * @param keyword: the keyword of this search for applications
+     * @param restrictions: The restrictions that the search results should meet(e.g. u want get the app infos whose top state is 0)
      * @return ApplicationInfoMap: the search result
      */
     ApplicationInfoMap searchApp(ApplicationProperties properties, const QString &keyword, ApplicationPropertyMap restrictions);
@@ -73,14 +74,14 @@ public:
     /**
      * @brief AppInfoTable::setAppToFavorites
      * set the app to favorites apps(default is at 1)
-     * @param desktopfp: the desktop file path of app
+     * @param desktopFilePath: the desktop file path of app
      */
     void setAppToFavorites(const QString &desktopFilePath);
 
     /**
      * @brief AppInfoTable::setFavoritesTo
      * set the favorites state of the app to num, you can also use to change the position of the app which is one of the Favorites Apps
-     * @param desktopfp: the desktop file path of app
+     * @param desktopFilePath: the desktop file path of app
      * @param num: the favorites app's position(from 1). If num is 0, it will remove the app from the favorites apps
      */
     void setFavoritesOfApp(const QString &desktopFilePath, size_t num);
@@ -88,14 +89,14 @@ public:
     /**
      * @brief AppInfoTable::setAppToTop
      * set the app to top apps(default is at 1)
-     * @param desktopfp: desktop file path of app
+     * @param desktopFilePath: desktop file path of app
      */
     void setAppToTop(const QString &desktopFilePath);
 
     /**
      * @brief AppInfoTable::setAppTopTo
      * set the top state of the app to num, you can also use to change the position of the app which is one of the Top Apps
-     * @param desktopfp: the desktop file path of app
+     * @param desktopFilePath: the desktop file path of app
      * @param num: the top app's position(from 1). If num is 0, it will remove the app from the top apps
      */
     void setTopOfApp(const QString &desktopFilePath, size_t num);
@@ -125,7 +126,7 @@ public:
      * @brief ApplicationInfo::tranWinIdToDesktopFilePath
      * find the desktop file path of the process which corresponds to the winId.
      * it will find through tranPidToDesktopFp method first, and then use the winId if the desktop file can not be found by pid;
-     * @param winId: the winId of the process which need to get its desktop file path
+     * @param winId: the winId of the process which need to get its desktop file path(Only for X)
      * @param desktopFilePath: the desktop file path of the process corresponding to pid
      * @return bool:true if success,else false
      */
diff --git a/ukui-search-app-data-service/app-db-manager.cpp b/ukui-search-app-data-service/app-db-manager.cpp
index 4f8a423..e3f1d28 100644
--- a/ukui-search-app-data-service/app-db-manager.cpp
+++ b/ukui-search-app-data-service/app-db-manager.cpp
@@ -1342,85 +1342,15 @@ bool AppDBManager::handleValueSet(const ApplicationInfoMap appInfoMap)
 
 QString AppDBManager::tranPidToDesktopFp(uint pid)
 {
-    QFile file("/proc/" + QString::number(pid) + "/cmdline");
-    file.open(QFile::ReadOnly);
-    QList<QByteArray> cmdlist = file.readAll().split('\0');
-    file.close();
-
-    cmdlist.removeAll("");
-    QString exePath;
-    for (int i = cmdlist.size() - 1; i >= 0; i--) {
-        if (cmdlist.at(i).startsWith("-") || cmdlist.at(i).contains("%")) {
-            continue;
-        }
-        if (!QUrl(cmdlist.at(i)).isRelative()) {
-            continue;
-        }
-        exePath = cmdlist.at(i);
-        break;
-    }
-
     QString desktopFilePath;
-    if (exePath.isEmpty()) {
-        qWarning() << "Can not find the desktop file by pid:" << pid << "because of empty exePath.";
-        return desktopFilePath;
-    }
-
-    QSqlQuery query(m_database);
-    query.setForwardOnly(true);
-    query.prepare("SELECT DESKTOP_FILE_PATH, EXEC FROM APPINFO WHERE EXEC LIKE :exePath");
-    query.bindValue(":exePath", "%" + exePath.section('/', -1) + "%");
-
-    if (query.exec()) {
-        QMap<QString, QString> execInfos;
-        while (query.next()) {
-            execInfos[query.value("DESKTOP_FILE_PATH").toString()] = query.value("EXEC").toString();
-            desktopFilePath = query.value("DESKTOP_FILE_PATH").toString();
-        }
-        //筛选后有多个结果时进一步过滤
-        if (execInfos.size() > 1) {
-            desktopFilePath.clear();
-            for (auto it = execInfos.constBegin(); it != execInfos.constEnd(); it++) {
-                if (it.key().startsWith(AUTOSTART_APP_DESKTOP_PATH + "/")) {
-                    continue;
-                }
-                QStringList execlist = it.value().split(" ", QString::SkipEmptyParts);
-                for (QString &partOfExec : execlist) {
-                    //remove the cmd option
-                    if (partOfExec.contains("%")) {
-                        continue;
-                    }
-                    //remove the " in cmd
-                    if (partOfExec.contains("\"")) {
-                        partOfExec.remove("\"");
-                    }
-                    //compare the binary path
-                    if (partOfExec.contains("/") && exePath.contains("/")) {
-                        if (partOfExec == exePath) {
-                            desktopFilePath = it.key();
-                            break;
-                        }
-                    } else {
-                        if ((partOfExec == exePath.section("/", -1)) || (partOfExec.section("/", -1) == exePath)) {
-                            desktopFilePath = it.key();
-                            break;
-                        }
-                    }
-                }
-                if (!desktopFilePath.isEmpty()) {
-                    break;
-                }
-            }
-        }
-
-        if (!desktopFilePath.isEmpty()) {
-            qDebug() << "PID: "  << pid << "Desktop file path: " << desktopFilePath;
-        } else {
-            qWarning() << "Can not find the desktop file of" << exePath <<  "by pid:" << pid;
-        }
+    QDBusReply<QString> reply = m_processManagerInterface->call("GetDesktopFileByPid", pid);
+    if (reply.isValid()) {
+        desktopFilePath = reply.value();
+        qDebug() << "PID: "  << pid << "Desktop file path: " << desktopFilePath;
     } else {
-        qWarning() << "Fail to exec cmd" << query.lastQuery() << m_database.lastError();
+        qWarning() << "Cannot find desktop file by pid:" << pid << "because of " << reply.error();
     }
+
     return desktopFilePath;
 }