diff --git a/frame/main.cpp b/frame/main.cpp
index f86035e54..b244884f0 100644
--- a/frame/main.cpp
+++ b/frame/main.cpp
@@ -36,7 +36,6 @@
 
 #include <DApplication>
 #include <DLog>
-#include <DDBusSender>
 #include <DGuiApplicationHelper>
 
 #include <unistd.h>
@@ -60,27 +59,6 @@ const QString g_cfgPath = QStandardPaths::standardLocations(QStandardPaths::Conf
 
 using namespace std;
 
-// let startdde know that we've already started.
-void RegisterDdeSession()
-{
-    QString envName("DDE_SESSION_PROCESS_COOKIE_ID");
-
-    QByteArray cookie = qgetenv(envName.toUtf8().data());
-    qunsetenv(envName.toUtf8().data());
-
-    if (!cookie.isEmpty()) {
-        QDBusPendingReply<bool> r = DDBusSender()
-                .interface("com.deepin.SessionManager")
-                .path("/com/deepin/SessionManager")
-                .service("com.deepin.SessionManager")
-                .method("Register")
-                .arg(QString(cookie))
-                .call();
-
-        qDebug() << Q_FUNC_INFO << r.value();
-    }
-}
-
 bool IsSaveMode()
 {
     QSettings settings(g_cfgPath, QSettings::IniFormat);
@@ -250,9 +228,6 @@ int main(int argc, char *argv[])
         return -1;
     }
 
-    qDebug() << "\n\ndde-dock startup";
-    RegisterDdeSession();
-
 #ifndef QT_DEBUG
     QDir::setCurrent(QApplication::applicationDirPath());
 #endif
diff --git a/frame/window/mainwindow.cpp b/frame/window/mainwindow.cpp
index 44b5417aa..5475caf2a 100755
--- a/frame/window/mainwindow.cpp
+++ b/frame/window/mainwindow.cpp
@@ -30,6 +30,7 @@
 #include <DPlatformWindowHandle>
 #include <DSysInfo>
 #include <DPlatformTheme>
+#include <DDBusSender>
 
 #include <QDebug>
 #include <QEvent>
@@ -75,6 +76,27 @@ const QPoint scaledPos(const QPoint &rawXPos)
            : rawXPos;
 }
 
+// let startdde know that we've already started.
+void RegisterDdeSession()
+{
+    QString envName("DDE_SESSION_PROCESS_COOKIE_ID");
+
+    QByteArray cookie = qgetenv(envName.toUtf8().data());
+    qunsetenv(envName.toUtf8().data());
+
+    if (!cookie.isEmpty()) {
+        QDBusPendingReply<bool> r = DDBusSender()
+                .interface("com.deepin.SessionManager")
+                .path("/com/deepin/SessionManager")
+                .service("com.deepin.SessionManager")
+                .method("Register")
+                .arg(QString(cookie))
+                .call();
+
+        qDebug() << Q_FUNC_INFO << r.value();
+    }
+}
+
 MainWindow::MainWindow(QWidget *parent)
     : DBlurEffectWidget(parent)
     , m_mainPanel(new MainPanelControl(this))
@@ -157,6 +179,12 @@ void MainWindow::callShow()
     qApp->setProperty("CANSHOW", true);
 
     launch();
+
+    // 预留200ms提供给窗口初始化再通知startdde，不影响启动速度
+    QTimer::singleShot(200, this, []{
+        qDebug() << "\n\ndde-dock startup RegisterDdeSession";
+        RegisterDdeSession();
+    });
 }
 
 void MainWindow::showEvent(QShowEvent *e)
diff --git a/interfaces/pluginsiteminterface.h b/interfaces/pluginsiteminterface.h
index 7f2a6092d..80ee6528f 100644
--- a/interfaces/pluginsiteminterface.h
+++ b/interfaces/pluginsiteminterface.h
@@ -234,7 +234,7 @@ protected:
     /// \brief m_proxyInter
     /// NEVER delete this object.
     ///
-    PluginProxyInterface *m_proxyInter;
+    PluginProxyInterface *m_proxyInter = nullptr;
 };
 
 QT_BEGIN_NAMESPACE