Abstract: In order to understand how the same wind speed affects the dust removal effect of internal mixing air atomizing nozzles, the DPM model is used to study and analyze the atomization characteristics of nozzles under different inlet conditions and the same wind speed. The results show that when the nozzle inlet conditions are the same, the average diameter D_3,2 decreases by 1.5 μm and 5.95 μm compared with the average diameter D_3,2 at the same wind speed of 1 m/s and 3 m/s, respectively, indicating that the particle diameter decreases with the increase of the wind speed. 0.6 m ahead of spray range, the influence of airflow on droplet diameter is small. After the spray range of 0.6 m, the influence of airflow on droplet diameter is greater with the increase of wind speed, and the effect is more obvious with the increase of distance. After 0.6 m, the maximum difference of D_3,2 can reach 6.0 μm. The water supply pressure is constant, and with the increase of air pressure, the influence of air flow on the particle size of fog drops gradually increases, while the influence of air supply pressure is fixed, and with the increase of water pressure, the influence of air flow on the particle size of fog drops gradually decreases.