diff --git a/libsearch/file-utils.cpp b/libsearch/file-utils.cpp
index e349a22..21c5c83 100644
--- a/libsearch/file-utils.cpp
+++ b/libsearch/file-utils.cpp
@@ -31,10 +31,10 @@ QIcon FileUtils::getFileIcon(const QString &uri, bool checkValid)
 {
     auto file = wrapGFile(g_file_new_for_uri(uri.toUtf8().constData()));
     auto info = wrapGFileInfo(g_file_query_info(file.get()->get(),
-                              G_FILE_ATTRIBUTE_STANDARD_ICON,
-                              G_FILE_QUERY_INFO_NONE,
-                              nullptr,
-                              nullptr));
+                                                G_FILE_ATTRIBUTE_STANDARD_ICON,
+                                                G_FILE_QUERY_INFO_NONE,
+                                                nullptr,
+                                                nullptr));
     if (!G_IS_FILE_INFO (info.get()->get()))
         return QIcon::fromTheme("unknown");
     GIcon *g_icon = g_file_info_get_icon (info.get()->get());
@@ -190,8 +190,8 @@ QString FileUtils::getMimetype(QString &path, bool getsuffix)
 //aborted
 QString FileUtils::find(const QString &hanzi)
 {
-//        static QMap<QString, QStringList> map = loadHanziTable("://index/pinyinWithoutTone.txt");
-//        static QMap<QString, QStringList> map;
+    //        static QMap<QString, QStringList> map = loadHanziTable("://index/pinyinWithoutTone.txt");
+    //        static QMap<QString, QStringList> map;
     QString output;
     QStringList stringList = hanzi.split("");
 
@@ -445,23 +445,23 @@ void stitchMultiToneWordsBFSStackLess3(const QString& hanzi, QStringList& result
         resultList.append(tempQueue.dequeue());
         resultList.append(tempQueueFirst.dequeue());
     }
-//    delete tempQueue;
-//    delete tempQueueFirst;
-//    tempQueue = nullptr;
-//    tempQueueFirst = nullptr;
+    //    delete tempQueue;
+    //    delete tempQueueFirst;
+    //    tempQueue = nullptr;
+    //    tempQueueFirst = nullptr;
     return;
 }
 
 QStringList FileUtils::findMultiToneWords(const QString& hanzi)
 {
-//    QStringList* output = new QStringList();
+    //    QStringList* output = new QStringList();
     QStringList output;
     QString tempAllPinYin, tempFirst;
     QStringList stringList = hanzi.split("");
 
-//    stitchMultiToneWordsDFS(hanzi, tempAllPinYin, tempFirst, output);
+    //    stitchMultiToneWordsDFS(hanzi, tempAllPinYin, tempFirst, output);
     stitchMultiToneWordsBFSStackLess3(hanzi, output);
-//    qDebug() << output;
+    //    qDebug() << output;
     return output;
 }
 
diff --git a/libsearch/global-settings.cpp b/libsearch/global-settings.cpp
index 054a272..b8a66a5 100644
--- a/libsearch/global-settings.cpp
+++ b/libsearch/global-settings.cpp
@@ -17,6 +17,7 @@ GlobalSettings::GlobalSettings(QObject *parent) : QObject(parent)
 {
     m_settings = new QSettings("org.ukui", "ukui-search", this);
     m_block_dirs_settings = new QSettings("org.ukui","ukui-search-block-dirs",this);
+    this->forceSync();
     //the default number of transparency in mainwindow is 0.7
     //if someone changes the num in mainwindow, here should be modified too
     m_cache.insert(TRANSPARENCY_KEY, 0.7);
@@ -32,6 +33,7 @@ GlobalSettings::GlobalSettings(QObject *parent) : QObject(parent)
     }
     m_cache.remove(TRANSPARENCY_KEY);
     m_cache.insert(TRANSPARENCY_KEY, m_gsettings->get(TRANSPARENCY_KEY).toDouble());
+
 }
 
 GlobalSettings::~GlobalSettings()
diff --git a/libsearch/index/filetypefilter.h b/libsearch/index/filetypefilter.h
index efc4404..bbae487 100644
--- a/libsearch/index/filetypefilter.h
+++ b/libsearch/index/filetypefilter.h
@@ -1,3 +1,4 @@
+//aborted --MouseZhangZh
 #ifndef FILETYPEFILTER_H
 #define FILETYPEFILTER_H
 
diff --git a/libsearch/index/first-index.cpp b/libsearch/index/first-index.cpp
new file mode 100644
index 0000000..d377ffd
--- /dev/null
+++ b/libsearch/index/first-index.cpp
@@ -0,0 +1,100 @@
+//#include <QtConcurrent>
+#include "first-index.h"
+#include <QDebug>
+
+FirstIndex::FirstIndex(const QString& path) : Traverse_BFS(path)
+{
+    QString indexDataBaseStatus =  GlobalSettings::getInstance()->getValue(INDEX_DATABASE_STATE).toString();
+    QString contentIndexDataBaseStatus = GlobalSettings::getInstance()->getValue(CONTENT_INDEX_DATABASE_STATE).toString();
+
+    qDebug() << "indexDataBaseStatus: " << indexDataBaseStatus;
+    qDebug() << "contentIndexDataBaseStatus: " << contentIndexDataBaseStatus;
+
+
+    if (indexDataBaseStatus == "" || contentIndexDataBaseStatus == ""){
+        this->bool_dataBaseExist = false;
+    }
+    if (indexDataBaseStatus != "2" || contentIndexDataBaseStatus != "2"){
+        this->bool_dataBaseStatusOK = false;
+    }
+
+    this->q_index = new QQueue<QVector<QString>>();
+    this->q_content_index = new QQueue<QString>();
+
+//    this->mlm = new MessageListManager();
+}
+
+FirstIndex::~FirstIndex()
+{
+    delete this->q_index;
+    this->q_index = nullptr;
+    this->q_content_index = nullptr;
+    delete this->q_content_index;
+//    delete this->mlm;
+//    this->mlm = nullptr;
+}
+
+void FirstIndex::DoSomething(const QFileInfo& fileInfo){
+//    qDebug() << "there are some shit here";
+    this->q_index->enqueue(QVector<QString>() << fileInfo.fileName() << fileInfo.absoluteFilePath() << QString(fileInfo.isDir() ? "1" : "0"));
+    for (auto i : this->targetFileTypeVec){
+        if (fileInfo.fileName().endsWith(i)){
+            this->q_content_index->enqueue(fileInfo.absoluteFilePath());
+        }
+    }
+}
+
+void FirstIndex::run(){
+    if (this->bool_dataBaseExist){
+        if (this->bool_dataBaseStatusOK){
+            this->quit();
+//            this->wait();
+        }
+        else{
+            //if the parameter is false, index won't be rebuild
+            //if it is true, index will be rebuild
+            this->p_indexGenerator = IndexGenerator::getInstance(true);
+        }
+    }
+    else{
+        this->p_indexGenerator = IndexGenerator::getInstance(false);
+    }
+    QSemaphore sem(5);
+    QMutex mutex1, mutex2, mutex3;
+    mutex1.lock();
+    mutex2.lock();
+    mutex3.lock();
+    sem.acquire(4);
+    QtConcurrent::run([&](){
+        sem.acquire(1);
+        mutex1.unlock();
+        this->Traverse();
+        sem.release(5);
+    });
+    QtConcurrent::run([&](){
+        sem.acquire(2);
+        mutex2.unlock();
+        qDebug() << "index start;";
+        this->p_indexGenerator->creatAllIndex(this->q_index);
+        qDebug() << "index end;";
+        sem.release(2);
+    });
+    QtConcurrent::run([&](){
+        sem.acquire(2);
+        mutex3.unlock();
+        qDebug() << "content index start;";
+        this->p_indexGenerator->creatAllIndex(this->q_content_index);
+        qDebug() << "content index end;";
+        sem.release(2);
+    });
+    mutex1.lock();
+    mutex2.lock();
+    mutex3.lock();
+    sem.acquire(5);
+    mutex1.unlock();
+    mutex2.unlock();
+    mutex3.unlock();
+    qDebug() << "first index end;";
+    this->quit();
+//    this->wait();
+}
diff --git a/libsearch/index/first-index.h b/libsearch/index/first-index.h
new file mode 100644
index 0000000..7f2bc18
--- /dev/null
+++ b/libsearch/index/first-index.h
@@ -0,0 +1,43 @@
+#ifndef FIRSTINDEX_H
+#define FIRSTINDEX_H
+
+#include <QThread>
+#include <QtConcurrent/QtConcurrent>
+//#include <QtConcurrent>
+#include "traverse_bfs.h"
+#include "global-settings.h"
+#include "index-generator.h"
+#include "messagelist-manager.h"
+
+class FirstIndex : public QThread, public Traverse_BFS
+{
+public:
+    FirstIndex(const QString&);
+    ~FirstIndex();
+    virtual void DoSomething(const QFileInfo &) final;
+protected:
+    void run() override;
+private:
+    FirstIndex(const FirstIndex&) = delete;
+    void operator=(const FirstIndex&) = delete;
+    bool bool_dataBaseStatusOK = false;
+    bool bool_dataBaseExist = false;
+    IndexGenerator* p_indexGenerator;
+
+    //here should be refact
+//    MessageListManager* mlm;
+
+    //test
+    QQueue<QVector<QString>>* q_index;
+    QQueue<QString>* q_content_index;
+    const QVector<QString> targetFileTypeVec ={
+//        QString(".doc"),
+        QString(".docx"),
+//        QString(".ppt"),
+//        QString(".pptx"),
+//        QString(".xls"),
+//        QString(".xlsx"),
+        QString(".txt")};
+};
+
+#endif // FIRSTINDEX_H
diff --git a/libsearch/index/index-generator.cpp b/libsearch/index/index-generator.cpp
index 7b18824..7d9dd84 100644
--- a/libsearch/index/index-generator.cpp
+++ b/libsearch/index/index-generator.cpp
@@ -117,6 +117,7 @@ IndexGenerator::IndexGenerator(bool rebuild, QObject *parent) : QObject(parent)
 
 IndexGenerator::~IndexGenerator()
 {
+    qDebug() << "~IndexGenerator";
     if(m_datebase_path)
         delete m_datebase_path;
     if(m_database_content)
diff --git a/libsearch/index/index-generator.h b/libsearch/index/index-generator.h
index 6f08b92..ebc53ed 100644
--- a/libsearch/index/index-generator.h
+++ b/libsearch/index/index-generator.h
@@ -3,7 +3,7 @@
 
 #include <xapian.h>
 #include <QObject>
-
+//#include <QtConcurrent/QtConcurrent>
 #include <QStringList>
 #include <QMap>
 #include <QCryptographicHash>
diff --git a/libsearch/index/index.pri b/libsearch/index/index.pri
index a0a7b8d..63343ce 100644
--- a/libsearch/index/index.pri
+++ b/libsearch/index/index.pri
@@ -6,11 +6,11 @@ HEADERS += \
     $$PWD/document.h \
     $$PWD/filetypefilter.h \
     $$PWD/file-reader.h \
+    $$PWD/first-index.h \
     $$PWD/index-generator.h \
 #    $$PWD/inotify-manager.h \
     $$PWD/inotify.h \
     $$PWD/messagelist-manager.h \
-    $$PWD/messagelisttemplate.h \
     $$PWD/traverse_bfs.h \
 #    $$PWD/text-content-indexer.h \
     $$PWD/file-searcher.h \
@@ -22,11 +22,11 @@ SOURCES += \
     $$PWD/document.cpp \
     $$PWD/filetypefilter.cpp \
     $$PWD/file-reader.cpp \
+    $$PWD/first-index.cpp \
     $$PWD/index-generator.cpp \
 #    $$PWD/inotify-manager.cpp \
     $$PWD/inotify.cpp \
     $$PWD/messagelist-manager.cpp \
-    $$PWD/messagelisttemplate.cpp \
     $$PWD/test-Inotify-Manager.cpp \
     $$PWD/traverse_bfs.cpp \
 #    $$PWD/text-content-indexer.cpp \
diff --git a/libsearch/index/inotify.h b/libsearch/index/inotify.h
index 427be65..6e5818b 100644
--- a/libsearch/index/inotify.h
+++ b/libsearch/index/inotify.h
@@ -1,3 +1,4 @@
+//aborted --MouseZhangZh
 #ifndef INOTIFY_H
 #define INOTIFY_H
 
diff --git a/libsearch/index/messagelist-manager.cpp b/libsearch/index/messagelist-manager.cpp
index 44882bc..a3a06e8 100644
--- a/libsearch/index/messagelist-manager.cpp
+++ b/libsearch/index/messagelist-manager.cpp
@@ -19,12 +19,12 @@ MessageListManager::MessageListManager(){
 
 MessageListManager::~MessageListManager(){
     delete this->messageList;
-    delete this->indexGeneratorThread;
+//    delete this->indexGeneratorThread;
     //delete this->ig;
 
     this->messageList = nullptr;
     this->ig = nullptr;
-    this->indexGeneratorThread = nullptr;
+//    this->indexGeneratorThread = nullptr;
 }
 
 void MessageListManager::AddMessage(const QVector<QString>& pathVec){
diff --git a/libsearch/index/messagelist-manager.h b/libsearch/index/messagelist-manager.h
index d79310b..1f94c64 100644
--- a/libsearch/index/messagelist-manager.h
+++ b/libsearch/index/messagelist-manager.h
@@ -1,3 +1,4 @@
+//aborted --MouseZhangZh
 #ifndef MESSAGELISTMANAGER_H
 #define MESSAGELISTMANAGER_H
 
@@ -22,7 +23,7 @@ private:
 
     size_t length = 80000;
     IndexGenerator* ig;
-    QThread* indexGeneratorThread;
+//    QThread* indexGeneratorThread;
 
 Q_SIGNALS:
     bool Send(QStringList*);
diff --git a/libsearch/index/messagelisttemplate.cpp b/libsearch/index/messagelisttemplate.cpp
deleted file mode 100644
index c0a85e8..0000000
--- a/libsearch/index/messagelisttemplate.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-#include "messagelisttemplate.h"
-#include <QtConcurrent>
-
-//重构部分，暂时不要调用
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::MessageVectorTemplate::MessageVectorTemplate(SOMETHINGINSTANCE* somethingInstance)
-{
-    this->somethingInstance = somethingInstance;
-}
-
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-bool MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::MessageVectorTemplate::addMessage(const MESSAGETYPE& message)
-{
-    this->messageVec->append(message);
-}
-
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-bool MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::sendMessage()
-{
-    QtConcurrent::run(
-                [&](){
-//        if (this->m_mutex.try_lock(this->m_time)){
-//            std::cout << "send_test_time" << std::endl;
-//            this->m_mutex.unlock();
-//        }
-    });
-}
-
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-bool MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::MessageVectorTemplate::sendDeleteMessage()
-{
-
-}
-
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-void MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::MessageVectorTemplate::setAutoSendMessageLength(const size_t& length)
-{
-    this->m_length = length;
-}
-
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-void MessageVectorTemplate<MESSAGETYPE, SOMETHINGINSTANCE>::MessageVectorTemplate::setAutoSendMessageTime(const size_t& time)
-{
-    this->m_time = time;
-}
diff --git a/libsearch/index/messagelisttemplate.h b/libsearch/index/messagelisttemplate.h
deleted file mode 100644
index 2b59838..0000000
--- a/libsearch/index/messagelisttemplate.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef MESSAGELISTTEMPLATE_H
-#define MESSAGELISTTEMPLATE_H
-#include <QObject>
-#include <memory>
-#include <mutex>
-#include <iostream>
-template<typename MESSAGETYPE, typename SOMETHINGINSTANCE>
-class MessageVectorTemplate
-{
-public:
-    MessageVectorTemplate(SOMETHINGINSTANCE*);
-
-    bool addMessage(const MESSAGETYPE&);
-    bool sendMessage();
-    bool sendDeleteMessage();
-    void setAutoSendMessageLength(const size_t&);
-    void setAutoSendMessageTime(const size_t&);
-
-
-private:
-    std::unique_ptr<std::vector<MESSAGETYPE>> messageVec = std::make_shared<std::vector<MESSAGETYPE>>();
-    std::unique_ptr<SOMETHINGINSTANCE> somethingInstance;
-
-    size_t m_length = 80000;
-    size_t m_time = 1000;
-    std::mutex m_mutex;
-};
-
-#endif // MESSAGELISTTEMPLATE_H
diff --git a/libsearch/index/traverse_bfs.cpp b/libsearch/index/traverse_bfs.cpp
index b554f2e..4862eab 100644
--- a/libsearch/index/traverse_bfs.cpp
+++ b/libsearch/index/traverse_bfs.cpp
@@ -2,6 +2,7 @@
 
 Traverse_BFS::Traverse_BFS(const QString& path)
 {
+    Q_ASSERT('/' == path.at(0));
     this->path = path;
 }
 
diff --git a/libsearch/index/traverse_bfs.h b/libsearch/index/traverse_bfs.h
index 0ef67a4..ed5e3c9 100644
--- a/libsearch/index/traverse_bfs.h
+++ b/libsearch/index/traverse_bfs.h
@@ -9,11 +9,14 @@
 class Traverse_BFS
 {
 public:
-    explicit Traverse_BFS(const QString&);
     void Traverse();
     virtual void DoSomething(const QFileInfo&) = 0;
     void setPath(const QString&);
+protected:
+    explicit Traverse_BFS(const QString&);
 private:
+    Traverse_BFS(const Traverse_BFS&) = delete;
+    void operator=(const Traverse_BFS&) = delete;
     QString path = "/home";
 };
 
diff --git a/libsearch/libsearch.h b/libsearch/libsearch.h
index 86928f2..2205333 100644
--- a/libsearch/libsearch.h
+++ b/libsearch/libsearch.h
@@ -8,6 +8,7 @@
 #include "index/inotify.h"
 #include "file-utils.h"
 #include "global-settings.h"
+#include "index/first-index.h"
 
 #include "index/filetypefilter.h"
 
diff --git a/libsearch/libsearch.pro b/libsearch/libsearch.pro
index 72d26ec..c0d214e 100644
--- a/libsearch/libsearch.pro
+++ b/libsearch/libsearch.pro
@@ -1,4 +1,4 @@
-QT += core concurrent xml widgets dbus
+QT += core xml widgets dbus concurrent
 VERSION = 0.0.1
 
 TARGET = ukui-search
diff --git a/src/main.cpp b/src/main.cpp
index 8184b5b..cde613d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,7 +38,8 @@ void messageOutput(QtMsgType type, const QMessageLogContext &context, const QStr
     QByteArray currentTime = QTime::currentTime().toString().toLocal8Bit();
 
     bool showDebug = true;
-    QString logFilePath = QStandardPaths::writableLocation(QStandardPaths::TempLocation) + "/ukui-search.log";
+//    QString logFilePath = QStandardPaths::writableLocation(QStandardPaths::TempLocation) + "/ukui-search.log";
+    QString logFilePath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation) + "/.config/org.ukui/ukui-search.log";
     if (!QFile::exists(logFilePath)) {
         showDebug = false;
     }
@@ -89,6 +90,12 @@ void centerToScreen(QWidget* widget) {
 
 int main(int argc, char *argv[])
 {
+
+    qInstallMessageHandler(messageOutput);
+
+    qDebug() << "main start";
+    FirstIndex* fi = new FirstIndex("/home");
+    fi->start();
     /*-------------ukuisearchdbus Test start-----------------*/
 //    UkuiSearchQDBus usQDBus;
 //    usQDBus.setInotifyMaxUserWatches();
@@ -127,7 +134,8 @@ int main(int argc, char *argv[])
 
     QtSingleApplication app("ukui-search", argc, argv);
     app.setQuitOnLastWindowClosed(false);
-    qInstallMessageHandler(messageOutput);
+
+    qDebug() << "main start x2";
 
     if(app.isRunning())
     {