The invention provides an intelligent traffic control system based on a UAV (unmanned aerial vehicle), and the system introduces the UAV, avoids the problems of low maintenance efficiency and high maintenance cost caused by manual maintenance, and improves the maintenance and testing efficiency of road video monitoring and speed measurement radars. In addition, because the maintenance operation ofthe UAV is carried out in the air, the system will not cause congestion on road traffic, etc., and maintains normal traffic order in the test and maintenance process, so the system is a convenient and efficient road video monitoring and speed measurement radar testing method. Finally, the system can simultaneously test both road video monitoring and speed measurement radars through one test, which improves test efficiency.