As a non-contact welding process, laser welding depth and width can be effectively controlled, with minimal deformation of welded parts, and almost no connection gap characteristics, has excellent welding quality. How to ensure the quality of laser welding, that is, how to carry out process monitoring and quality control in the process of laser welding, which is an important content in the field of laser utilization, but the ordinary camera in the process of laser welding will not be able to photograph the state of the internal molten pool due to excessive exposure of brightness. Deep vision intelligent high-speed camera can be combined with special light source or special optical path for shooting, to observe the laser trajectory, molten pool melting state and splashing direction through strong light, to help improve the laser welding process.