diff --git a/whiteboard_exported_image.png b/communication diagram.png
similarity index 100%
rename from whiteboard_exported_image.png
rename to communication diagram.png
diff --git a/readme.md b/readme.md
index 87d37b0..08137d2 100644
--- a/readme.md
+++ b/readme.md
@@ -4,7 +4,7 @@ And it is communcatied by ros2 foxy, visualized by rviz2.
 
 Package name: sweet_webots_robot
 Communication Schematic diagram：
-    ![通信示意图](./src/sweet_webots_robot/whiteboard_exported_image.png)  
+    ![通信示意图](./communication%20diagram.png)  
 1. rm -rf build install log
 2. colcon build
 3. source install/setup.bash