diff --git a/AndroidDocument.md b/AndroidDocument.md
index fe33588..1bf1716 100644
--- a/AndroidDocument.md
+++ b/AndroidDocument.md
@@ -62,6 +62,8 @@ Help==>About Eclips点击Android对应的图标就可以查看版本了.
     <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
     <uses-permission android:name="android.permission.GET_ACCOUNTS"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
     <!-- for card.io card scanning -->
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.VIBRATE" />