The invention discloses a communication system based on power emergency repair. The communication system comprises N emergency communication vehicles, a satellite communication vehicle, M video collecting terminals, an MCU and a video conference device, wherein M is a positive integer, and N is a positive integer. The emergency communication vehicles and the video collecting terminals are in signal connection with the satellite communication vehicle. The satellite communication vehicle and a communication satellite are connected in a wireless transmission mode. The MCU and the communication satellite are connected in a wireless transmission mode. The video conference device is electrically connected with the MCU. The communication system is simple in principle and high in work efficiency, the voice service and the data communication service can be rapidly opened on a disaster relief site, the communication information and data are transmitted back to a background satellite ground station through a satellite link by means of a communication-in-moving/satellite portable station on the satellite communication vehicle, the information data real-time sharing of the disaster relief site and a background platform is realized, and it is ensured that the timely and effective commanding and dispatching can be conducted on the disaster relief site by a background emergency commanding platform.