In order to give play to the excellent off-boresight performance of the fourth generation short range air-to-air missile(SRAAM), firstly the layout changing regulation of the Up-Look reticle of United States military combined helmet mounted display aided missile to intercept the large off-boresight angle target was summarized in this paper. Secondly the combat superiority brought by large off-boresight angle launch in typical air combat situation was simulated. Finally, combining the maneuvering form of fig...