In order to solve the problems of poor dust atomization effect, high dust concentration on site, not conducive to human health and unclear dust removal effect under different pressures in 8208 working face of Yanzishan Coal Mine, the performance of dust removal atomization nozzle in coal mining face was studied. A high-efficiency dust removal atomizing nozzle for coal mining face was designed, and the fluid simulation software Fluent was used to simulate the flow field performance of the atomizing nozzle. The pressure range was set to be 0.1 ~0.6 MPa, and the velocity of the nozzle external flow field and the turbulent kinetic energy of the flow field were simulated under different water pressures. The results show that as the external input pressure increases, the outlet velocity of the nozzle gradually increases, the smaller the particle diameter in the atomization field space is, the larger the angle between the atomization space is, and the secondary atomization is formed by the droplet rupture at the jet outlet position. The turbulent energy value shows a trend of increasing first and then decreasing. In order to ensure the best atomization effect, the distance of atomization nozzle should be controlled to be 0.4 m. The field installation and application of 8208 working face in Yanzishan Mine of Jinkong Group show that the water flow at the outlet of atomizing nozzle is divergent, the effect of atomizing dust removal is obviously improved, the dust concentration on site is greatly reduced, and the working environment of workers is improved, which has achieved obvious application results.