The utility model relates to a can be based on visual identification's electric rotating device, including the running gear that can freely slide in the space to and install the actuating mechanism onrunning gear, running gear installs on carrying the thing board, and running gear connects a power device, actuating mechanism is including installing the clamping device on running gear, the last power -driven rotation handle of installing of clamping device, and the tool bit is connected to the lower extreme of power -driven rotation handle, the camera is still installed to the lower extreme ofpower -driven rotation handle, and camera connection control system, control system connect a power device and be used for adjusting knife head angle and the angle sensor module of drive power -driven rotation handle work, the power -driven rotation handle is connected to the angle sensor module. The utility model discloses efficiency is higher, and speed is very fast, makes tool bit and work piece to complete the processing of under vertically contacting's condition handle.