Fresh air washing purification mainly realizes "washing air" through the mode of "washing+filtering". The filter area filled with "rainstorm" in the equipment can form rows of opposite cylinders to spray each other, and the water body diffuses due to mutual impact, generating impulse. The air purified by the water body must be filtered by high-efficiency filter elements. After running for a period of time, the electronic monitoring equipment showed that the concentration of pollutants decreased and the air quality improved obviously.