Abstract: In view of stealth aircraft tactical maneuver application problem, this paper discusses the influence of tactical maneuver on dynamic RCS and target detection. First, establish the EM model of a typical stealth target, and obtain static RCS of full airspace; Then analyze from three aspects of pitch, yaw and rolling the relationship between tactical maneuver and the line of sight of radar; Finally, establish the detection probability calculation model, and simulate the influence on dynamic RCS series and detection probability by MATLAB when different tactical maneuver is adopted by stealth aircraft. The simulation results show: detection probability of the stealth aircraft changes effectively after tactical maneuver is used. This study provides simulation theory and experimental evidence for application of stealth aircraft tactical maneuver.