diff --git a/deepin-system-monitor-plugin/gui/monitor_plugin.cpp b/deepin-system-monitor-plugin/gui/monitor_plugin.cpp
index cfd85226..859c7a3a 100644
--- a/deepin-system-monitor-plugin/gui/monitor_plugin.cpp
+++ b/deepin-system-monitor-plugin/gui/monitor_plugin.cpp
@@ -445,14 +445,6 @@ MonitorPlugin::~MonitorPlugin()
     }
 }
 
-QIcon MonitorPlugin::icon(Dock::IconType iconType, Dock::ThemeType) const
-{
-    QIcon fallbackIcon = QIcon(":/deepin-system-monitor.svg");
-    QString iconName = DGuiApplicationHelper::instance()->themeType() == DGuiApplicationHelper::LightType ? "status-system-monitor-dark" : "status-system-monitor";
-
-    return( (iconType == Dock::IconType_DCC_Settings) ? QIcon::fromTheme(iconName, fallbackIcon) : QIcon());
-}
-
 void MonitorPlugin::onClickQuickPanel()
 {
     qInfo() << __FUNCTION__ << __LINE__ << "[-MonitorPlugin-] ClickQuickPanel";
diff --git a/deepin-system-monitor-plugin/gui/monitor_plugin.h b/deepin-system-monitor-plugin/gui/monitor_plugin.h
index 86b0cdfd..fe952c99 100644
--- a/deepin-system-monitor-plugin/gui/monitor_plugin.h
+++ b/deepin-system-monitor-plugin/gui/monitor_plugin.h
@@ -188,11 +188,6 @@ class MonitorPlugin : public QObject, PLUGIN_INTERDACE
     //! the flags for the plugin
     //!
     Dock::PluginFlags flags() const  { return Dock::Type_Quick | Dock::Quick_Panel_Single | Dock::Attribute_Normal; }
-    //!
-    //! the icon for the plugin
-    //! themeType {0:UnknownType 1:LightType 2:DarkType}
-    //!
-    virtual QIcon icon(Dock::IconType, Dock::ThemeType) const ;
 #endif
 
 private slots: