Abstract: The direct force control （DFC） for CCV. Aircraft consists of following modes: direct lift, fuselage aiming> vertical translation and maneuver enhancement. These modes could be converted between each other, once the pilot pushes the selected button according to the various fighting tasks and some flight functions. Based on the implementation of digital control of each DFC mode with microprocessor, this paper presents a scheme for multimode synthesis and conversion between each other. The results of the system hybrid simulation experiment have shown that the technique of mode conversion is successful and the aircraft transient response during the operation of conversion is satisfactory. And this paper provides us with a feasible scheme for the realization of multimode DFC or the mode conversion for other flight control systems.