An electric power transmission line lightning stroke point determination method based on the unmanned aerial vehicle technology comprises: 1, setting the flight line of an unmanned aerial vehicle flying platform according to the directions of the electric power transmission lines in an integration monitoring subsystem; performing video collection of the power line state according to the flight line along the electric power transmission lines through the unmanned aerial vehicle flying platform, and transferring the video collection data to a mobile substation; 2, performing monitoring and preprocessing of the video collection data through the mobile substation in real time, performing defect prognostics of the collected video data, and sending the processed video data to the integration monitoring subsystem in real time; and 3, arranging the lightning stroke point standard image information in the integration monitoring subsystem, comparing and analyzing the collected video data, and if discovering that the collected video data matches with the lightning stroke point standard image information, outputting the alarm information, and allowing inspectors to observe the video images at the integration monitoring subsystem in real time. The electric power transmission line lightning stroke point determination method based on the unmanned aerial vehicle technology employs an unmanned aerial vehicle to perform real-time polling of the lightning stroke points of the electric power transmission line so as to ensure the safe and reliable operation of the Electric power transmission line and realize the automatic monitoring of the stroke points of the electric power transmission line.