diff --git a/dde-dock/src/Panel/panel.cpp b/dde-dock/src/Panel/panel.cpp
index 0d2ad6e28..8f1662b8d 100644
--- a/dde-dock/src/Panel/panel.cpp
+++ b/dde-dock/src/Panel/panel.cpp
@@ -90,7 +90,6 @@ void Panel::slotEnteredMask()
 
 void Panel::slotExitedMask()
 {
-    leftLayout->addSpacingItem();
 //    leftLayout->relayout();
 }
 
diff --git a/dde-dock/src/Widgets/docklayout.cpp b/dde-dock/src/Widgets/docklayout.cpp
index 787d1acfe..238967378 100644
--- a/dde-dock/src/Widgets/docklayout.cpp
+++ b/dde-dock/src/Widgets/docklayout.cpp
@@ -126,6 +126,23 @@ void DockLayout::sortBottomToTop()
 
 }
 
+bool DockLayout::hasSpacingItemInList()
+{
+    if (appList.count() <= 1)
+        return false;
+    if (appList.at(0)->x() > itemSpacing)
+        return true;
+
+    for (int i = 1; i < appList.count(); i ++)
+    {
+        if (appList.at(i)->x() - itemSpacing != appList.at(i - 1)->x() + appList.at(i - 1)->width())
+        {
+            return true;
+        }
+    }
+    return false;
+}
+
 int DockLayout::indexOf(AbstractDockItem *item)
 {
     return appList.indexOf(item);
@@ -164,7 +181,7 @@ void DockLayout::addSpacingItem()
         return;
 
     AbstractDockItem *tmpItem = tmpAppMap.firstKey();
-    for (int i = appList.count() -1;i > lastHoverIndex; i-- )
+    for (int i = appList.count() -1;i >= lastHoverIndex; i-- )
     {
         AbstractDockItem *targetItem = appList.at(i);
         targetItem->setNextPos(targetItem->x() + tmpItem->width() + itemSpacing,0);
@@ -242,6 +259,14 @@ void DockLayout::slotItemEntered(QDragEnterEvent *)
     AbstractDockItem *item = qobject_cast<AbstractDockItem*>(sender());
 
     int tmpIndex = indexOf(item);
+    lastHoverIndex = tmpIndex;
+    qWarning() << "========" << lastHoverIndex;
+    if (!hasSpacingItemInList())
+    {
+        addSpacingItem();
+        return;
+    }
+
     QPoint tmpPos = QCursor::pos();
 
     if (tmpPos.x() - m_lastPost.x() == 0)
@@ -262,7 +287,6 @@ void DockLayout::slotItemEntered(QDragEnterEvent *)
     }
 
     m_lastPost = tmpPos;
-    lastHoverIndex = tmpIndex;
 
     if (!tmpAppMap.isEmpty())
     {
@@ -275,6 +299,7 @@ void DockLayout::slotItemEntered(QDragEnterEvent *)
         {
             targetItem->setNextPos(QPoint(targetItem->x() - tmpAppMap.firstKey()->width() - itemSpacing,0));
         }
+
         QPropertyAnimation *animation = new QPropertyAnimation(targetItem, "pos");
         animation->setStartValue(targetItem->pos());
         animation->setEndValue(targetItem->getNextPos());
diff --git a/dde-dock/src/Widgets/docklayout.h b/dde-dock/src/Widgets/docklayout.h
index 61538abe2..a00dc6fde 100644
--- a/dde-dock/src/Widgets/docklayout.h
+++ b/dde-dock/src/Widgets/docklayout.h
@@ -41,7 +41,6 @@ public:
     int indexOf(AbstractDockItem * item);
     int indexOf(int x,int y);
     void relayout();
-    void addSpacingItem();
     void dragoutFromLayout(int index);
 
 signals:
@@ -64,6 +63,9 @@ private:
     void sortTopToBottom();
     void sortBottomToTop();
 
+    void addSpacingItem();
+    bool hasSpacingItemInList();
+
 private:
     QList<AbstractDockItem *> appList;
     QMap<AbstractDockItem *,int> tmpAppMap;//only one item inside
diff --git a/dde-dock/src/mainwidget.cpp b/dde-dock/src/mainwidget.cpp
index 25139191d..7e2854014 100644
--- a/dde-dock/src/mainwidget.cpp
+++ b/dde-dock/src/mainwidget.cpp
@@ -12,7 +12,7 @@ MainWidget::MainWidget(QWidget *parent)
 
     this->setWindowFlags(Qt::ToolTip);
     this->setAttribute(Qt::WA_TranslucentBackground);
-    this->move(0,800);
+    this->move(0,rec.height()  - 100);
 }
 
 MainWidget::~MainWidget()