In this paper the simulation test facilities and technologies for USAF Electronic Warfare Evaluation System, US Army Aviation & Missile command Advanced Simulation Center and US Navy Simulation Laboratory are described. The simulators being used in America are divided into two types: one is the optic-mechanical system, another is computer scene generation system. The latter will be the development trend in the future, and can be achieved in three ways: resistor array, laser diode, and thermal converter. It is suggested that both optic-mechanical system and computer scene generation system should be used in our Electro-optical simulation test facilities.