The invention provides a flight control system, which comprises an airborne system and a ground system, wherein the airborne system comprises a miniature video camera, a GPS receiver, a GPS signal collection unit, a power supply monitoring unit, an overlapping unit and a microwave emitting unit, the miniature video camera and the GPS receiver are arranged outside an unmanned plane, the GPS signal collection unit, the power supply monitoring unit, the overlapping unit and the microwave emitting unit are arranged inside the unmanned plane, and the ground system comprises a microwave receiving unit, a video display and a remote control, wherein the miniature video camera is used for monitoring video images right ahead the unmanned plane in real time, the GPS signal collection unit is used for collecting and processing data transmitted from the GPS receiver to obtain flight parameters, the power supply monitoring unit is used for detecting and obtaining the power supply information of the unmanned plane, the overlapping unit is used for overlapping the flight parameters and/or the power supply information onto the video images, and the microwave emitting unit is used for emitting the overlapping results to the ground system. The invention can perfectly control the unmanned plane.