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According to the measurement and control system of collecting peripheral information in a measuring instrument, measuring data analysis and processing, and centralized control of the equipment needs to consider from the overall design of the system, the hardware circuit design of the system controller and driver development. At the same time, the application program of the system is designed according to the actual demand, and the angle error of the system is analyzed. In order to facilitate the operation and improve the measurement accuracy, the system of collimation axis tilt angle error, horizontal axis tilt and vertical axis tilt caused are analyzed, a mathematical model is set up and solved, while the use of electronic compensator and compensate the system.