diff --git a/dde-dock/abstractdockitem.h b/dde-dock/abstractdockitem.h
new file mode 100644
index 000000000..bec11d7eb
--- /dev/null
+++ b/dde-dock/abstractdockitem.h
@@ -0,0 +1,39 @@
+#ifndef ABSTRACTDOCKITEM_H
+#define ABSTRACTDOCKITEM_H
+
+#include <QWidget>
+#include <QFrame>
+#include <QMouseEvent>
+#include <QRectF>
+
+class AbstractDockItem : public QFrame
+{
+    Q_OBJECT
+public:
+    explicit AbstractDockItem(QWidget *parent = 0);
+    virtual ~AbstractDockItem() = 0;
+
+    virtual QWidget * getContents() = 0;
+
+    virtual void setTitle(const QString &title) = 0;
+    virtual void setIcon(const QString &iconPath, int size = 42) = 0;
+    virtual void setMoveable(bool value) = 0;
+    virtual bool moveable() = 0;
+    virtual void setActived(bool value) = 0;
+    virtual bool actived() = 0;
+    virtual void setIndex(int value) = 0;
+    virtual int index() = 0;
+
+protected:
+    QPixmap * m_appIcon = NULL;
+
+    bool m_itemMoveable = true;
+    bool m_itemActived = false;
+
+    QString m_itemTitle = "";
+    QString m_itemIconPath = "";
+    int m_itemIndex = 0;
+
+};
+
+#endif // ABSTRACTDOCKITEM_H
diff --git a/dde-dock/dde-dock.pro b/dde-dock/dde-dock.pro
index 8723e7724..54b782141 100644
--- a/dde-dock/dde-dock.pro
+++ b/dde-dock/dde-dock.pro
@@ -39,7 +39,9 @@ HEADERS  += mainwidget.h \
     Widgets/docklayout.h \
     Widgets/windowpreview.h \
     Widgets/dockitem.h \
-    Widgets/screenmask.h
+    Widgets/screenmask.h \
+    dockplugininterface.h \
+    abstractdockitem.h
 
 RESOURCES += \
     images.qrc
diff --git a/dde-dock/dockplugininterface.h b/dde-dock/dockplugininterface.h
new file mode 100644
index 000000000..9858e8556
--- /dev/null
+++ b/dde-dock/dockplugininterface.h
@@ -0,0 +1,23 @@
+#ifndef DOCKPLUGININTERFACE_H
+#define DOCKPLUGININTERFACE_H
+
+#include <QObject>
+#include "abstractdockitem.h"
+
+class DockPluginInterface : public QObject
+{
+    Q_OBJECT
+public:
+    virtual ~DockPluginInterface() {}
+    virtual QList<AbstractDockItem*> items();
+};
+
+QT_BEGIN_NAMESPACE
+
+#define DockPluginInterface_iid "org.deepin.Dock.PluginInterface"
+
+Q_DECLARE_INTERFACE(DockPluginInterface, DockPluginInterface_iid)
+
+QT_END_NAMESPACE
+
+#endif // DOCKPLUGININTERFACE_H