diff --git a/panels/dock/launcherItem/package/launcheritem.qml b/panels/dock/launcherItem/package/launcheritem.qml
index 611e258b0..411892379 100644
--- a/panels/dock/launcherItem/package/launcheritem.qml
+++ b/panels/dock/launcherItem/package/launcheritem.qml
@@ -17,6 +17,30 @@ AppletItem {
     implicitWidth: useColumnLayout ? Panel.rootObject.dockSize : dockSize
     implicitHeight: useColumnLayout ? dockSize : Panel.rootObject.dockSize
 
+    onXChanged: updateLaunchpadPos()
+    onYChanged: updateLaunchpadPos()
+    Connections {
+        target: Panel.rootObject
+        function onDockCenterPartPosChanged()
+        {
+            updateLaunchpadPos()
+        }
+    }
+
+    function updateLaunchpadPos()
+    {
+        var launchpad = DS.applet("org.deepin.ds.launchpad")
+        if (!launchpad)
+            return
+
+        var lX = launcher.mapToGlobal(launcher.x + launcher.width / 2, 0).x
+        var lY = Panel.rootObject.y
+        launchpad.rootObject.windowedPos = Qt.point(lX, lY)
+    }
+    Component.onCompleted: {
+        updateLaunchpadPos()
+    }
+
     D.ActionButton {
         anchors.centerIn: parent
         icon.name: Applet.iconName
diff --git a/panels/dock/package/main.qml b/panels/dock/package/main.qml
index e5c9fdcc3..b1124b2d8 100644
--- a/panels/dock/package/main.qml
+++ b/panels/dock/package/main.qml
@@ -22,6 +22,8 @@ Window {
     property int dockLeftSpaceForCenter: useColumnLayout ? 
         (Screen.height - dockLeftPart.implicitHeight - dockRightPart.implicitHeight) :
         (Screen.width - dockLeftPart.implicitWidth - dockRightPart.implicitWidth)
+    // TODO
+    signal dockCenterPartPosChanged()
 
     property int dockCenterPartCount: dockCenterPartModel.count
 
@@ -251,6 +253,9 @@ Window {
             id: dockCenterPart
             implicitWidth: centerLoader.implicitWidth
             implicitHeight: centerLoader.implicitHeight
+            onXChanged: dockCenterPartPosChanged()
+            onYChanged: dockCenterPartPosChanged()
+
             OverflowContainer {
                 id: centerLoader
                 anchors.fill: parent