diff --git a/src/grand-search/gui/searchconfig/intelligentretrieval/intelligentretrievalwidget.cpp b/src/grand-search/gui/searchconfig/intelligentretrieval/intelligentretrievalwidget.cpp
index 70120ad9..26eb0361 100644
--- a/src/grand-search/gui/searchconfig/intelligentretrieval/intelligentretrievalwidget.cpp
+++ b/src/grand-search/gui/searchconfig/intelligentretrieval/intelligentretrievalwidget.cpp
@@ -117,7 +117,7 @@ void IntelligentRetrievalWidget::updateState()
 
     auto cfg = SearchConfig::instance();
     if (isAnalayzeSupported()) {
-        bool checked = cfg->getConfig(GRANDSEARCH_SEMANTIC_GROUP, GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, true).toBool();
+        bool checked = cfg->getConfig(GRANDSEARCH_SEMANTIC_GROUP, GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, false).toBool();
         m_semantic->checkBox()->setChecked(checked);
         m_semantic->checkBox()->setEnabled(true);
     } else {
@@ -226,6 +226,12 @@ void IntelligentRetrievalWidget::checkBoxChanged()
     if (sd == m_semantic->checkBox()) {
         bool on = m_semantic->checkBox()->isChecked();
         cfg->setConfig(GRANDSEARCH_SEMANTIC_GROUP, GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, on);
+
+        QDBusMessage msg = createAnalayzeMsg("SetSemanticOn");
+        QVariantList argvs;
+        argvs.append(on);
+        msg.setArguments(argvs);
+        QDBusConnection::sessionBus().asyncCall(msg, 500);
     } else if (sd == m_vector->checkBox()){
         bool on = m_vector->checkBox()->isChecked();
         cfg->setConfig(GRANDSEARCH_SEMANTIC_GROUP, GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_VECTOR, on);
diff --git a/src/libgrand-search-daemon/configuration/configer.cpp b/src/libgrand-search-daemon/configuration/configer.cpp
index 2403383c..c357491f 100644
--- a/src/libgrand-search-daemon/configuration/configer.cpp
+++ b/src/libgrand-search-daemon/configuration/configer.cpp
@@ -85,7 +85,7 @@ UserPreferencePointer ConfigerPrivate::webSearchEngine()
 
 UserPreferencePointer ConfigerPrivate::semanticEngine()
 {
-    QVariantHash data{{GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, true}
+    QVariantHash data{{GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, false}
                      , {GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_VECTOR, true}};
 
     return UserPreferencePointer(new UserPreference(data));
@@ -204,7 +204,7 @@ bool ConfigerPrivate::updateConfig1(QSettings *set)
         set->beginGroup(GRANDSEARCH_SEMANTIC_GROUP);
         if (UserPreferencePointer conf = m_root->group(GRANDSEARCH_SEMANTIC_GROUP)) {
             bool on = false;
-            bool ret = set->value(GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, true).toBool();
+            bool ret = set->value(GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, false).toBool();
             conf->setValue(GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, ret);
             on |= ret;
 
diff --git a/src/libgrand-search-daemon/searcher/semantic/semanticsearcher.cpp b/src/libgrand-search-daemon/searcher/semantic/semanticsearcher.cpp
index 6cec55f8..8d0754f5 100644
--- a/src/libgrand-search-daemon/searcher/semantic/semanticsearcher.cpp
+++ b/src/libgrand-search-daemon/searcher/semantic/semanticsearcher.cpp
@@ -48,7 +48,7 @@ bool SemanticSearcher::isActive() const
     Q_ASSERT(config);
 
     SemanticParser paser;
-    if (config->value(GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, true)) {
+    if (config->value(GRANDSEARCH_CLASS_GENERALFILE_SEMANTIC_ANALYSIS, false)) {
         if (paser.connectToAnalyze(SemanticHelper::analyzeServiceName())) {
             d->m_semantic  = paser.isAnalayzeSupported();
         }