The invention discloses a power transmission line danger source and point management and control method for checking potential safety hazard through a hand-held device. The method is characterized in that a management and control system adopted by the method comprises network cameras arranged near power transmission line corridor danger sources and points; the network cameras are connected with a video acquisition and storage server; the video acquisition and storage server is connected with a video analysis server; the video analysis server is connected with an information management and control center; the information management and control center is connected with the video acquisition and storage server; a client is connected with a web server and a player; the web server is connected with the information management and control center; the player is connected with the video acquisition and storage server; the information management and control center is connected with a mobile phone of a management person; and the mobile phone of the management person is connected with the video acquisition and storage server. The power transmission line danger source and point management and control system has the advantages of reasonable structure, automatic identification, active alarm and good work performance.