The working principle of the high-pressure washing dish is completed by two parts, the booster pump and the power drive unit, and this process is relatively easy to understand. First, the power-driven device completes a water absorption and drainage process for the conveyed water, and the discharged water forms low-flow high-pressure water through the power drive. The high-pressure water is then sent to the booster pump, and then enters the high-pressure nozzle after the booster process. Since the water outlet of the high-pressure nozzle is much smaller than the water inlet, the output high-pressure water is ejected at a relatively high speed. The jetted high-pressure, high-speed water impacts the surface of the object with its strong potential energy. When the impact force is greater than the adhesion of the stain, it can wash most of the pollutants on the surface of the object.