Dual-axis tracking radar for common servo tracking accuracy and the coordination of control, to improve control precision and coordination of performance, a coordinated control of variable gain cross-coupling model is proposes. by establishing the mathematical model of two axis servo system, Based on the analysis of pitch and level of servo motor tracking error on the accuracy of radar servo system, tracking error is extended to the situation of arbitrary motion profile curve, and the cross-coupling with variable gain control algorithm is used to coordinate and control the radar servo system. The simulation results show that this method can improve the tracking accuracy and reduce system errors.