diff --git a/docs/quickstart/apollo_2_0_sensor_calibration_guide_cn.md b/docs/quickstart/apollo_2_0_sensor_calibration_guide_cn.md
index 5923da6a8c62a19652b68a918d0fa46841b98aa2..f7f4b4cdb4e85367b449deb40efc0c46ebef9d4c 100644
--- a/docs/quickstart/apollo_2_0_sensor_calibration_guide_cn.md
+++ b/docs/quickstart/apollo_2_0_sensor_calibration_guide_cn.md
@@ -117,7 +117,7 @@
 
 所有标定程序需要用到车辆的定位结果。请确认车辆定位状态为56，否则标定程序不会开始采集数据。输入以下命令可查询车辆定位状态：
 
-```bash
+	```bash
 	rostopic echo /apollo/sensor/gnss/ins_stat
     ```