In order to avoid problems such as trajectory deviation and obstacle collision during robot movement, a method for autonomous robot movement path tracking based on LiDAR is proposed. By using LiDAR technology to monitor the activity range of autonomous robots through radar, high-precision environmental contour information is obtained in real-time. Based on the obtained information, the SLAM map of robot movement is constructed. Use the PRM algorithm to plan the movement path in the environment, use a pure tracking algorithm to determine the control equation for the movement path tracking based on the planning results, and introduce an optimization equation for the tracking trajectory adjustment coefficient to achieve autonomous robot movement path tracking. The experimental results show that when using the above method to track the robot's moving path, the difference between the robot's moving speed, turning angle, and the target is small, indicating high tracking accuracy and good performance.