In order to analyze the performance of the tracking and pointing mechanism of the optical transceiver in the space laser communication network,and to improve the tracking accuracy,the control and simulation technology of the tracking and pointing mechanism were studied.The mechanical system model of the tracking and pointing mechanism was established,and the control system based on linear active disturbance rejection control was designed; the electromechanical combined virtual prototype was built by using ADAMS and Simulink,and the simulation analysis of the tracking performance of the tracking and pointing mechanism was completed.The results show that by using the LADRC-based joint simulation control system,the speed tracking dead zone caused by friction disturbance is eliminated,and the tracking accuracy is better than traditional PID control; the maximum tracking error for a sinusoidal signal with a frequency of 0.1 Hz is 105 μrad,which is in line with the tracking and pointing mechanism.It can be used as a reference for the research and development of physical prototypes.