The invention discloses a mobile electric power monitoring device, relates to the technical field of electric power construction, and solves the technical problem for effectively managing and controlling electric working process. The mobile electric power monitoring device comprises an insulating safety helmet and a mobile terminal, a helmet-carried earphone, a helmet-carried microphone, a helmet-carried camera, a headlamp and an electric shock preventing alarming module are arranged on the safety helmet, the mobile terminal is provided with an audio output port, an audio input port and a video input port and is embedded with a wireless communication module, the audio output port of the mobile terminal is connected with the helmet-carried earphone on the safety helmet, the audio input port of the mobile terminal is connected with the helmet-carried microphone on the safety helmet, and the video input port is connected with the helmet-mounted camera on the safety helmet. By the aid of the mobile electric power monitoring device, human cost can be reduced, electric working process can be standardized, and electric working power, working standardization and working safety can be improved.