Monitoring device and major hazard source visual management system

The utility model provides a monitoring device and a major hazard source visual management system, and belongs to the technical field of enterprise safety production management and control. The monitoring device comprises a gas monitoring mechanism and a video monitoring mechanism. The gas monitoring mechanism comprises a monitoring box, an ash removal assembly, a partition plate, a gas suction assembly, a filter screen, an electronic alarm and an observation window, the ash removal assembly is connected to the inner wall of the monitoring box and penetrates and extends to the outside of the monitoring box, the observation window is embedded in one side of the monitoring box, the ash removal assembly is attached to the observation window, and the partition plate is arranged on the partition plate. The partition plate is installed on the inner wall of the monitoring box, and the filter screen is connected between the partition plate and the monitoring box. Through the dust cleaning structure and the gas monito