The current laser cleaning machines on the market include pulsed laser cleaning machines and continuous laser cleaning machines, both of which can remove the dirt on the surface of the substrate, the only difference is that the pulsed laser cleaning machine uses a pulsed laser. Continuous laser cleaning machines use continuous laser transmitters. The pulse laser cleaning machine will not damage the substrate after cleaning the dirt, and is suitable for cleaning products with high requirements on the surface of the substrate; while the continuous laser cleaning machine has almost no damage to the substrate, and is suitable for large-area cleaning, such as steel plate rust removal, paint Derusting, shipyard derusting, etc.