diff --git a/libsearch/app-db-common.h b/libsearch/app-db-common.h
index fba443b..00a1ee0 100644
--- a/libsearch/app-db-common.h
+++ b/libsearch/app-db-common.h
@@ -2,8 +2,6 @@
 #define APPDBCOMMON_H
 
 #include <QDir>
-#include <QMetaType>
-#include <QDBusArgument>
 
 namespace UkuiSearch {
 
@@ -12,6 +10,7 @@ namespace UkuiSearch {
 
 struct AppInfoResult
 {
+public:
     QString desktopPath;
     QString iconName;
     QString appLocalName;
@@ -23,27 +22,7 @@ struct AppInfoResult
     int lock;
 
     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.favorite << infoResult.launchTimes << infoResult.lock;
-        argument.endStructure();
-        return argument;
-    }
-
-    friend const QDBusArgument &operator >> (const QDBusArgument &argument, AppInfoResult &infoResult)
-    {
-        argument.beginStructure();
-        argument >> infoResult.desktopPath >> infoResult.iconName >> infoResult.appLocalName >> infoResult.firstLetter
-                 >> infoResult.category >> infoResult.top >> infoResult.favorite >> infoResult.launchTimes >> infoResult.lock;
-
-        argument.endStructure();
-        return argument;
-    }
-
 };
-
 }
 
 Q_DECLARE_METATYPE(UkuiSearch::AppInfoResult)
diff --git a/libsearch/app-info-dbus-argument.h b/libsearch/app-info-dbus-argument.h
new file mode 100644
index 0000000..161e5d7
--- /dev/null
+++ b/libsearch/app-info-dbus-argument.h
@@ -0,0 +1,31 @@
+#ifndef APPINFODBUSARGUMENT_H
+#define APPINFODBUSARGUMENT_H
+
+#include <QDBusArgument>
+#include "app-db-common.h"
+
+namespace UkuiSearch {
+
+    QDBusArgument &operator << (QDBusArgument &argument, const AppInfoResult &infoResult)
+    {
+        argument.beginStructure();
+        argument << infoResult.desktopPath << infoResult.iconName << infoResult.appLocalName << infoResult.firstLetter
+                 << infoResult.category << infoResult.top << infoResult.favorite << infoResult.launchTimes << infoResult.lock;
+        argument.endStructure();
+        return argument;
+    }
+
+    const QDBusArgument &operator >> (const QDBusArgument &argument, AppInfoResult &infoResult)
+    {
+        argument.beginStructure();
+        argument >> infoResult.desktopPath >> infoResult.iconName >> infoResult.appLocalName >> infoResult.firstLetter
+                >> infoResult.category >> infoResult.top >> infoResult.favorite >> infoResult.launchTimes >> infoResult.lock;
+
+        argument.endStructure();
+        return argument;
+    }
+
+}
+
+
+#endif // APPINFODBUSARGUMENT_H
diff --git a/libsearch/libsearch.pro b/libsearch/libsearch.pro
index 18b3069..21661ec 100644
--- a/libsearch/libsearch.pro
+++ b/libsearch/libsearch.pro
@@ -51,6 +51,7 @@ SOURCES += \
 
 HEADERS += \
     app-db-common.h \
+    app-info-dbus-argument.h \
     common.h \
     file-utils.h \
     global-settings.h \
diff --git a/ukui-search-app-data-service/ukui-search-app-data-service.cpp b/ukui-search-app-data-service/ukui-search-app-data-service.cpp
index 1acef86..e2d6ae3 100644
--- a/ukui-search-app-data-service/ukui-search-app-data-service.cpp
+++ b/ukui-search-app-data-service/ukui-search-app-data-service.cpp
@@ -1,6 +1,7 @@
 #include "ukui-search-app-data-service.h"
 #include "app-db-manager.h"
 #include "signal-transformer.h"
+#include "app-info-dbus-argument.h"
 
 #include <QDBusConnection>
 #include <QDBusMetaType>