diff --git a/ui/mainframe.py b/ui/mainframe.py
index f6b5609..39c19ad 100644
--- a/ui/mainframe.py
+++ b/ui/mainframe.py
@@ -603,7 +603,8 @@ def _take_screen_shot(self, tmp_path, path, use_cmd=True):
         """屏幕截图"""
         if use_cmd:
             self._device.adb.run_shell_cmd("screencap %s" % tmp_path)
-            self._device.adb.run_shell_cmd("chmod 444 %s" % tmp_path)
+            # 非root手机截图需要700权限
+            self._device.adb.run_shell_cmd("chmod 700 %s" % tmp_path)
             self._device.adb.pull_file(tmp_path, path)
         else:
             self._device.take_screen_shot(path, 10)