diff --git a/README.md b/README.md
index 345d5e2..d07d83b 100644
--- a/README.md
+++ b/README.md
@@ -305,3 +305,12 @@ cd ~/Calibration_ws
 source devel/setup.bash
 roslaunch multi_calibration auto_calibration.launch laser_cam:=2
 ```
+Then you can get the laser calibration result in ```cfg``` folder in ```calib_results.txt```. Then, when you relaunch the ```auto_calibration.launch``` with laser_cam:=3 you can see the laser calibration verification program. It will get the calibration data from ```calib_results.txt``` and show the following image.
+<p align="center">
+    <img src="images/laser_check.png" alt="Image Viewer Panel" width="500"/>
+</p>
+In this image, you can see all the data you collected and the predict laser plane. All red dot on the plane means a good calibration. 
+
+
+## 4. Arm-Arm Calibration
+Under developing
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diff --git a/images/laser_check.png b/images/laser_check.png
new file mode 100644
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