diff --git a/frontend/model/search-result-manager.cpp b/frontend/model/search-result-manager.cpp
index ea36eed..1ac4a63 100644
--- a/frontend/model/search-result-manager.cpp
+++ b/frontend/model/search-result-manager.cpp
@@ -31,9 +31,7 @@ SearchResultManager::SearchResultManager(const QString& plugin_id, QObject *pare
 
 void SearchResultManager::startSearch(const QString &keyword)
 {
-    //NEW_TODO 加锁？停止线程？重新搜索？
-//    stopSearch();
-    qDebug()<<m_plugin_id<<"------------------>start by others";
+    qDebug()<<m_plugin_id<<"started";
     if(! m_get_result_thread->isRunning()) {
         m_get_result_thread->start();
     }
@@ -48,8 +46,10 @@ void SearchResultManager::startSearch(const QString &keyword)
 void SearchResultManager::stopSearch()
 {
     if(m_get_result_thread->isRunning()) {
-        qDebug()<<m_plugin_id<<"-------------->stopped by others";
+        qDebug()<<m_plugin_id<<"stopped";
         m_get_result_thread->stop();
+        SearchPluginIface *plugin = SearchPluginManager::getInstance()->getPlugin(m_plugin_id);
+        plugin->stopSearch();
 //        m_get_result_thread->quit();
     }
 }
@@ -70,7 +70,6 @@ void ReceiveResultThread::stop()
     this->quit();
 }
 
-//NEW_TODO 还未对队列加锁
 void ReceiveResultThread::run()
 {
     QTimer * m_timer = new QTimer;
@@ -86,7 +85,7 @@ void ReceiveResultThread::run()
         }
         if(m_timer->isActive() && m_timer->remainingTime() < 0.01) {
             this->requestInterruption();
-            qWarning()<<"-------------->stopped by self";
+            qWarning()<<"-------------->stopped by itself";
         }
         if(is_empty && !m_timer->isActive()) {
             m_timer->start();
diff --git a/libsearch/appsearch/app-search-plugin.cpp b/libsearch/appsearch/app-search-plugin.cpp
index 149cc6e..39142a5 100644
--- a/libsearch/appsearch/app-search-plugin.cpp
+++ b/libsearch/appsearch/app-search-plugin.cpp
@@ -44,6 +44,13 @@ void AppSearchPlugin::KeywordSearch(QString keyword, DataQueue<SearchPluginIface
     m_pool.start(appsearch);
 }
 
+void AppSearchPlugin::stopSearch()
+{
+    m_mutex.lock();
+    ++uniqueSymbol;
+    m_mutex.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> AppSearchPlugin::getActioninfo(int type)
 {
     switch (type) {
diff --git a/libsearch/appsearch/app-search-plugin.h b/libsearch/appsearch/app-search-plugin.h
index 8d98243..2b34c2e 100644
--- a/libsearch/appsearch/app-search-plugin.h
+++ b/libsearch/appsearch/app-search-plugin.h
@@ -30,6 +30,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type);
 //    bool isPreviewEnable(QString key, int type);
diff --git a/libsearch/index/file-search-plugin.cpp b/libsearch/index/file-search-plugin.cpp
index 6e86f8c..d76c93d 100644
--- a/libsearch/index/file-search-plugin.cpp
+++ b/libsearch/index/file-search-plugin.cpp
@@ -49,6 +49,13 @@ void UkuiSearch::FileSearchPlugin::KeywordSearch(QString keyword, DataQueue<Resu
     }
 }
 
+void FileSearchPlugin::stopSearch()
+{
+    SearchManager::m_mutexFile.lock();
+    ++SearchManager::uniqueSymbolFile;
+    SearchManager::m_mutexFile.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> FileSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
@@ -250,6 +257,13 @@ void UkuiSearch::DirSearchPlugin::KeywordSearch(QString keyword, DataQueue<Resul
     }
 }
 
+void DirSearchPlugin::stopSearch()
+{
+    SearchManager::m_mutexDir.lock();
+    ++SearchManager::uniqueSymbolDir;
+    SearchManager::m_mutexDir.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> DirSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
@@ -423,6 +437,13 @@ void UkuiSearch::FileContengSearchPlugin::KeywordSearch(QString keyword, DataQue
     }
 }
 
+void FileContengSearchPlugin::stopSearch()
+{
+    SearchManager::m_mutexContent.lock();
+    ++SearchManager::uniqueSymbolContent;
+    SearchManager::m_mutexContent.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> FileContengSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
diff --git a/libsearch/index/file-search-plugin.h b/libsearch/index/file-search-plugin.h
index 6c37f1b..762e6b8 100644
--- a/libsearch/index/file-search-plugin.h
+++ b/libsearch/index/file-search-plugin.h
@@ -31,6 +31,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type = 0);
 //    bool isPreviewEnable(QString key, int type);
@@ -85,6 +86,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type = 0);
 //    bool isPreviewEnable(QString key, int type);
@@ -138,6 +140,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type = 0);
 //    bool isPreviewEnable(QString key, int type);
diff --git a/libsearch/mailsearch/mail-search-plugin.cpp b/libsearch/mailsearch/mail-search-plugin.cpp
index cd3e661..e4df9e1 100644
--- a/libsearch/mailsearch/mail-search-plugin.cpp
+++ b/libsearch/mailsearch/mail-search-plugin.cpp
@@ -57,6 +57,13 @@ void MailSearchPlugin::KeywordSearch(QString keyword, DataQueue<SearchPluginIfac
     m_pool.start(mailSearch);
 }
 
+void MailSearchPlugin::stopSearch()
+{
+    m_mutex.lock();
+    ++uniqueSymbol;
+    m_mutex.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> MailSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
diff --git a/libsearch/mailsearch/mail-search-plugin.h b/libsearch/mailsearch/mail-search-plugin.h
index 9a65bea..dad6f84 100644
--- a/libsearch/mailsearch/mail-search-plugin.h
+++ b/libsearch/mailsearch/mail-search-plugin.h
@@ -51,6 +51,7 @@ public:
 
     QString getPluginName();
     void KeywordSearch(QString keyword, DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type);
     QWidget *detailPage(const ResultInfo &ri);
diff --git a/libsearch/notesearch/note-search-plugin.cpp b/libsearch/notesearch/note-search-plugin.cpp
index 74ebac8..161a655 100644
--- a/libsearch/notesearch/note-search-plugin.cpp
+++ b/libsearch/notesearch/note-search-plugin.cpp
@@ -41,6 +41,13 @@ void NoteSearchPlugin::KeywordSearch(QString keyword, DataQueue<SearchPluginIfac
     m_pool.start(ns);
 }
 
+void NoteSearchPlugin::stopSearch()
+{
+    g_mutex.lock();
+    ++g_uniqueSymbol;
+    g_mutex.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> NoteSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
diff --git a/libsearch/notesearch/note-search-plugin.h b/libsearch/notesearch/note-search-plugin.h
index 2f3f413..f057436 100644
--- a/libsearch/notesearch/note-search-plugin.h
+++ b/libsearch/notesearch/note-search-plugin.h
@@ -39,6 +39,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type);
 //    bool isPreviewEnable(QString key, int type);
diff --git a/libsearch/plugininterface/search-plugin-iface.h b/libsearch/plugininterface/search-plugin-iface.h
index 0ca9315..2d17ced 100644
--- a/libsearch/plugininterface/search-plugin-iface.h
+++ b/libsearch/plugininterface/search-plugin-iface.h
@@ -39,6 +39,7 @@ public:
     virtual ~SearchPluginIface() {}
     virtual QString getPluginName() = 0;
     virtual void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult) = 0;
+    virtual void stopSearch() = 0;
     virtual QList<Actioninfo> getActioninfo(int type) = 0;
     virtual void openAction(int actionkey, QString key, int type) = 0;
 //    virtual bool isPreviewEnable(QString key, int type) = 0;
diff --git a/libsearch/settingsearch/settings-search-plugin.cpp b/libsearch/settingsearch/settings-search-plugin.cpp
index 310891a..fbe665c 100644
--- a/libsearch/settingsearch/settings-search-plugin.cpp
+++ b/libsearch/settingsearch/settings-search-plugin.cpp
@@ -44,6 +44,13 @@ void UkuiSearch::SettingsSearchPlugin::KeywordSearch(QString keyword, DataQueue<
     m_pool.start(settingSearch);
 }
 
+void SettingsSearchPlugin::stopSearch()
+{
+    m_mutex.lock();
+    ++m_uniqueSymbolForSettings;
+    m_mutex.unlock();
+}
+
 QList<SearchPluginIface::Actioninfo> SettingsSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
diff --git a/libsearch/settingsearch/settings-search-plugin.h b/libsearch/settingsearch/settings-search-plugin.h
index dd3eaa0..3bec896 100644
--- a/libsearch/settingsearch/settings-search-plugin.h
+++ b/libsearch/settingsearch/settings-search-plugin.h
@@ -31,6 +31,7 @@ public:
     QString getPluginName();
 
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type);
 //    bool isPreviewEnable(QString key, int type);
diff --git a/libsearch/websearch/web-search-plugin.cpp b/libsearch/websearch/web-search-plugin.cpp
index 269170a..64f1718 100644
--- a/libsearch/websearch/web-search-plugin.cpp
+++ b/libsearch/websearch/web-search-plugin.cpp
@@ -35,6 +35,10 @@ void UkuiSearch::WebSearchPlugin::KeywordSearch(QString keyword, DataQueue<UkuiS
     searchResult->enqueue(resultInfo);
 }
 
+void WebSearchPlugin::stopSearch()
+{
+}
+
 QList<UkuiSearch::SearchPluginIface::Actioninfo> UkuiSearch::WebSearchPlugin::getActioninfo(int type)
 {
     return m_actionInfo;
diff --git a/libsearch/websearch/web-search-plugin.h b/libsearch/websearch/web-search-plugin.h
index 28107c8..5790411 100644
--- a/libsearch/websearch/web-search-plugin.h
+++ b/libsearch/websearch/web-search-plugin.h
@@ -28,6 +28,7 @@ public:
     bool isEnable() {return m_enable;}
     QString getPluginName();
     void KeywordSearch(QString keyword,DataQueue<ResultInfo> *searchResult);
+    void stopSearch();
     QList<SearchPluginIface::Actioninfo> getActioninfo(int type);
     void openAction(int actionkey, QString key, int type);
     QWidget *detailPage(const ResultInfo &ri);