The optimization design of 0.3-110 GHz Compact Antenna Test Range(CATR) calibration system is put forward aiming for the field calibration requirements on the plane wave amplitude-phase performance in the domestic military and civilian antenna and target characteristic measurement. A microwave amplitude-phase transceiver system is developed, as well as an integrated receiver probe antenna and high precision movable large polar coordinate scanning equipment(radius 3 m, flatness Root Mean Square(RMS) value 0.048 mm) with eight degrees of freedom. The large-scale calibration system is completed. The performance of the calibration system is validated in compact antenna test range of aerospace company. The results show that the calibration system has strong function, and can meet the calibration requirements of various types of compact fields.