diff --git a/qml/main.qml b/qml/main.qml
index c646f8d..03b3a3a 100644
--- a/qml/main.qml
+++ b/qml/main.qml
@@ -58,10 +58,10 @@ Item {
     UkuiItems.StyleBackground {
         id: backgroundMask
         // 初始状态默认为normalScreen
-        x: normalGeometry.x
-        y: normalGeometry.y
-        height: normalGeometry.height
-        width: normalGeometry.width
+        x: mainWindow.isFullScreen ? 0 : normalGeometry.x
+        y: mainWindow.isFullScreen ? 0 : normalGeometry.y
+        height: mainWindow.isFullScreen ? root.height : normalGeometry.height
+        width: mainWindow.isFullScreen ? root.width : normalGeometry.width
         radius: mainWindow.isFullScreen ? 0 : Platform.Theme.windowRadius
 
         border.width: 1