For the control and management of the unmanned, design an automatic flight control system aim at a micro unmanned. It is composed of the flight control computer, navigation computer, steering gear, sensors and other components. The flight control and mission management functions separately, dual DSP system architecture use two TMS320 C2000 series C2809 micro-computer synchronization operation and control, DSP chip with asynchronous communication between data transmission. Through ground physical debugging and flight testing, the hardware architecture to meet the needs of the flight control system, which has some value in engineering.