diff --git a/android/app/src/main/res/drawable/launch_background.xml b/android/app/src/main/res/drawable/launch_background.xml
index d3dde08..f46e48a 100644
--- a/android/app/src/main/res/drawable/launch_background.xml
+++ b/android/app/src/main/res/drawable/launch_background.xml
@@ -13,9 +13,12 @@
     <!--    <bitmap android:gravity="center"-->
     <!--            android:src="@mipmap/hyzp_ybqx00_yibin_launche" />-->
     <!--            android:src="@mipmap/hyzp_ybqx01_cuiping_launche" />-->
+    <!--    android:gravity=["top" | "bottom" | "left" | "right" | "center_vertical" |-->
+    <!--    "fill_vertical" | "center_horizontal" | "fill_horizontal" |-->
+    <!--    "center" | "fill" | "clip_vertical" | "clip_horizontal"]-->
     <item android:top="37.5dp">
         <bitmap
-            android:gravity="fill"
+            android:gravity="top"
             android:src="@mipmap/hyzp_ybqx511528_xingwen_launche" />
     </item>