The invention discloses a visual operation process monitoring mistake precaution system and a control method. The visual operation process monitoring mistake precaution system comprises a centralized control mistake precaution main machine, a video integrated platform, an equipment video server, a station control mistake precaution main machine, a mobile video server, a monitoring and data collection system, a handheld intelligent terminal, a computer key, a locking lock and a mobile video terminal, wherein the centralized control mistake precaution main machine, the video integrated platform, the equipment video server, the station control mistake precaution main machine, the mobile video server and the monitoring and data collection system are interconnected through a wired network; the station control mistake precaution main machine, the handheld intelligent terminal and the computer key are sequentially connected with one another in a wireless manner; the locking lock is connected with the computer key in a wired manner; and the mobile video terminal is connected with the mobile video server in the wireless manner. According to the control method, through the measures of mistake precaution logic judgment, strayed interval judgment, equipment state confirmation, omnibearing video monitoring and the like, the problem of real-time interaction with field operation information is solved by a wireless network; a wireless mobile video is introduced; existing equipment videos are integrated; and the visual operation process monitoring mistake precaution system has the advantages that management of visual centralized operation monitoring mistake precaution on a centralized control station is achieved, the working efficiency of an electric power operation department is improved, and the safety management level of the electric power operation department is also improved.