Abstract: In order to obtain the best dust reduction efficiency of the air-water combined power dust collector, based on the working principle of the air-water combined power dust collector, the performance parameter test method of the air-water combined power dust collector was determined, the design and development of the test system were completed, and the working principle of the test system was explained. The performance test of the air-water combined power dust collector under different air supply pressures and water supply pressures, and various performance parameters of the air-water combined power dust collector were obtained. The results show that the test system provides a test platform for realizing the matching of dust removal efficiency and optimal operating parameters of the air-water combined power dust collector. Compared with no water supply, the air volume and dust reduction efficiency of the air-water combined power dust collector under the water supply situation are significantly improved. When the water supply pressure is 3 MPa and the air supply pressure is from 0.2 MPa to 0.5 MPa, the air volume and dust reduction efficiency of the air-water combined power dust collector increase with the increase of the air supply pressure.