Abstract:Joystick is widely applied in the virtual reality technology and simulative equipments，but the related research is mainly limited on the game joystick and flying joystick without being broadened further. When the functional requirement is complex, joystick becomes impractical and failed to meet the equipment's demand. In order to control the change of parameters for the radar simulator by joystick，the projects of hardware connection and software connection were presented, which were proved to meet the functional requirements well. Therefore, the control on the change of simulator parameters by joystick was realized. It can also provide a reference for the flexible controlling on flying objects in all directions by joystick under the virtual reality environment.