In order to improving response speed, accuracy, speed ranges of tracking radar, Panasonic MINAS Servo driver and permanent magnet AC synchronous servo electric motor are used as drive and implementation components, taking TI Co.'s TMS320F2812 DSP is applied as controller for the servo control board. The design has come true tracking radar all-digital AC servo system. Using vector control algorithm put up torque, speed and position control to tracking radar. Result shows that the system achieves the aim of rapid response, high precision tracking, and wide speed range, and it ensure the stability and security of electric motor and radar load effectively at the same time.