The invention provides a power grid operation risk monitoring large-screen display system. The video processing unit displays the image information of the camera on a video system. The video processing unit processes the image information of the remote control operation end and then displays the image information on the video system; the state information of the remote control operation end is transmitted to the protection measurement and control device. The anti-misoperation system carries out judgment according to the image information of the remote control operation end of the video system;determining whether a remote control operation is erroneous, and finally, the remote control locking controller is controlled by the anti-misoperation system in a remote control unlocking manner. Then the remote control locking controller controls the protection measurement and control device, the anti-misoperation system judges according to image information about the remote control operation end in the video system, and the monitoring system judges whether to control the protection measurement and control device according to the locking information so as to adjust the remote control operation end. The monitoring efficiency of electric power operation can be effectively improved, and the safety management and control level of the electric power operation is improved.