In order to implement the function of a helmet display system, a small size and light weight color micro organic light emitting display (OLED) is used as image source in the simulator, which has higher brightness and resolution. The optical system is composed by double convex lens and translucent plane mirror, in which can satisfy the needs of helmet display by perspective and collimation display. The measuring equipment contains double cameras and double infrared radiators, meanwhile the helmet position is obtained by software collecting and processing, which can gain big position measurement range and small helmet added weight. The application results show that the simulator has good versatility and the functions and technical indexes reach the design requirements. The design can provide references for vehicle-mounted, ship-based and airborne helmet display system simulators.