Abstract: To combine all of the subsystems in a flight simulation visual system and complete the overall test, the subsystems were linked into a complex system by computer serial, parallel, and network communications; mutual disturbances among the subsystems were removed; all of the subsystems were synchronized and coordinated; the head position signals were smoothed; blocking problems of the network were solved. Various functions of the target/background projecting systems are realized, the design specifications of the visual system are reached and the satisfactory effect for the flight simulation is achived.