Underwater welding monitoring device

The utility model provides an underwater welding monitoring device which comprises a monitoring system computer, a monitoring picture selection panel, a monitoring screen, signal cables and cameras, wherein the monitoring screen is positioned above the water surface, a plurality of signal cables are led out of the monitoring system computer and then respectively connected with the monitoring screen, an underwater welding scene monitoring camera, an underwater welding process monitoring camera and a weld appearance detection camera, the selection panel is provided with a plurality of option buttons for enabling the monitoring screen to simultaneously or respectively display pictures shot by the three cameras, and the plurality of option buttons are respectively connected with the computer. The underwater welding monitoring device can provide scene monitoring, welding process monitoring and appearance detection so as to enable upper monitoring personnel to have a comprehensive understanding and master of the welding scene, welding process and appearance after welding, thus preventing a diver from going to the water surface and back for replacing the cameras for multiple times, shortening the welding operation time of the diver, ensuring the continuity and integrity of the shooting of underwater welding process, and saving the production cost.