Intelligent patrol inspection plays an important role in power grid construction. This scheme proposed a new type of electric power inspection way. Using the unique advantages of Unmanned Aerial Vehicle (UAV), the dual system of UAV and intelligent vehicle is combined to carry out electric patrol inspection. In high voltage substations, give priority to with smart car checking power meter. In the field work, we use drones to realize the detection of high voltage power lines. The scheme can greatly reduce the manpower and improve the detection efficiency.