diff --git a/frame/panel/mainpanelcontrol.cpp b/frame/panel/mainpanelcontrol.cpp
index f2246bb9e..0269d9d0a 100755
--- a/frame/panel/mainpanelcontrol.cpp
+++ b/frame/panel/mainpanelcontrol.cpp
@@ -56,7 +56,7 @@ MainPanelControl::MainPanelControl(QWidget *parent)
     , m_pluginLayout(new QBoxLayout(QBoxLayout::LeftToRight))
     , m_appAreaSonWidget(new QWidget(this))
     , m_appAreaSonLayout(new QBoxLayout(QBoxLayout::LeftToRight))
-    , m_position(Position::Top)
+    , m_position(Position::Bottom)
     , m_placeholderItem(nullptr)
     , m_appDragWidget(nullptr)
     , m_dislayMode(Efficient)