Abstract: There is a strong correlation between the effect of atomized droplet dust reduction technology and the droplet properties, and it is one of the basic contents to realize the safe mining and green development of mines to realize efficient dust capture and rapid dust reduction by adjusting the properties of dust reduction droplets. Based on the experimental platform of atomization and dust reduction combined with the micro and nano bubble generator, we tested the characteristics of the micro and nano bubble synergistic active water solution, atomization particle size distribution and dust reduction efficiency, and analyzed the mechanism of the micro and nano bubble synergistic synergistic active water dust reduction. The results show that: the micro-nanobubbles reduce the surface tension of pure water solution by 4.1 mN/m, and reduce the surface tension of active water solution by 3.0 mN/m, and the surface tension of micro-nanobubbles water gradually recovers to a state slightly lower than that of the state that doesn't contain micro-nanobubbles with the increase of the standing time; the concentration of micro-nanobubbles firstly rises and then decreases with the pre-mixing time, and then tends to be stable, which gradually decreases with the standing time; the pre-mixing stable concentration of micro-nanobubbles active water is higher than the pre-mixing stable concentration of micro-nanobubbles active water. The pre-mixed stable concentration of micro-nano bubble water is higher than that of micro-nano bubble water, and the bubble burst rate with the resting time is lower than that of micro-nano bubble water; micro-nano bubbles are added into the atomized dust reduction water, with the increase of the water supply pressure, the particle size of the atomized droplets decreases; under the same conditions of the water supply pressure, the efficiency of the micro-nano bubble water for dust reduction is large; the micro-nano bubble water has a stronger ability to capture fine dust, which is important research significance for the protection of the workers' life safety and health and improve the efficiency of safe production and the safety of the workers. It has important research significance and application value to protect the life and health of workers and improve the efficiency of safe production.