In order to better use and maintain the weather radar, the fundamental operational principle of the newly generated Doppler weather radar CINRAD/SB Servo System, and the function and application of Lenze Servo Controller are introduced.It sums up some technological problems and corresponding solutions when the radar is in the process of debugging while leaving factory, rectifying and improving, trial run and formal operation. It adopts the semi-closed loop controlling project, solves the problem of accurate orientation by appropriately controlming the driving chain, uses the Controller Area Network to communicate and control, makes use of Servo Controller′s “inner tripping operation” to solve the automatic reset of the Controller Area Network, utilizes Servo System′s own function to resolve the switch of working manners. Through the test on the spot, the closed loop controlling accuracy of the radar′s angle of azimuth and elevation outstrips than 0.1°. According to instructions, the Servo System can correctly switch various volume models, such as VCP11, VCP21, VCP31, etc. and receive various instructions. All the factual test on the spot and operational effect indicate that this system′s design is successful.