diff --git a/README.md b/README.md
index 87bbe42..0b73c1f 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,6 @@
 ```bash
 cd /workspace
 colcon build --symlink-install
-source /opt/ros/humble/setup.bash
-source install/setup.bash
 ```
 
 ### 确认 package 能被 ROS2 找到
@@ -27,13 +25,11 @@ ros2 pkg list | grep explore
 
 ### 注意事项
 
-为了方便，写入 `~/.bashrc`：
+每一个终端执行前建议：
 
 ```bash
-echo 'source /opt/ros/humble/setup.bash' >> ~/.bashrc
-echo 'source /workspace/install/setup.bash' >> ~/.bashrc
-echo 'export TURTLEBOT3_MODEL=burger' >> ~/.bashrc
-source ~/.bashrc
+source /opt/ros/humble/setup.bash
+source /workspace/install/setup.bash
 ```
 
 ## 2. 启动仿真(后面每一个步骤都在新终端执行)
@@ -68,7 +64,7 @@ ros2 launch explore_lite explore.launch.py
 export NAV2_MAP_PATH=/workspace/src/turtlebot3_simulations/turtlebot3_gazebo/map
 ros2 run nav2_map_server map_saver_cli -f ${NAV2_MAP_PATH}/office_map
 ```
-
+执行结束后，路径/workspace/src/turtlebot3_simulations/turtlebot3_gazebo/map下会新增新地图的pgm和yaml文件。
 ## 8. 模型说明
 该package 基于explore_lite进行 ROS2 适配与二次开发，是未知环境自主建图的核心，实现地图前沿检测、探索目标。m-explore-ros2 package 的src/目录下包含explore.cpp、costmap_client.cpp、frontier_search.cpp，分别实现探索节点主要逻辑、代价地图数据subscribe与同步， frontier_search的核心算法。
 
diff --git a/assets/picture01.png b/assets/picture01.png
index d9973e1..5fb12aa 100644
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