The invention provides a power patrol unmanned aerial vehicle remote control command encryption communication method, which aims at the problem that an unmanned aerial vehicle is easy to be hijacked by a forged remote control terminal after a power transmission line patrol unmanned aerial vehicle remote control communication mechanism is attacked and cracked. According to the method, FPGA is usedat the remote control terminal side for carrying out hardware encryption on a remote control command; then, at the unmanned aerial vehicle end, an embedded safety chip is adopted for carrying out hardware decryption on the received encryption control command, thereby realizing unmanned aerial vehicle remote control communication based on hardware encryption and decryption. In order to meet the requirement that a patrol team is provided with a plurality of unmanned aerial vehicles and the unmanned aerial vehicles probably replace the remote control terminal, each time the unmanned aerial vehicle is paired with the remote control terminal before flying, a secret key corresponding to the unmanned aerial vehicle embedded security chip is stored to the remote control terminal side FPGA so thatthe remote control terminal and the unmanned aerial vehicle adopt the same secret key to carry out hardware symmetrical encryption communication, thereby ensuring the real-time performance and security of remote control communication of the unmanned aerial vehicle.