Abstract: In order to realize the effective prevention and control of coal dust, the magnetic-electric coupling spray dust reduction technology is proposed. First, by measuring the surface tension and contact angle of magnetized water under different magnetization intensities and magnetization times, its wetting and atomization properties are analyzed. Secondly, the magnetized water was magnetized with optimal parameters to increase the applied electric field to explore the effects of electrode voltage, electrode ring parameters, and electrode spacing on the charging characteristics and atomization performance of magneto-electrically coupled water. Then, the dust reduction effects of ordinary water, magnetized water and magneto-electrically coupled water were compared by the self-built dust removal experimental platform. Finally, COMSOL software is used to simulate the changes of collision patterns between the above three liquids and coal dust particles. The experimental results show that: the best dust reduction parameters of magnetized water solution are magnetization intensity of 350 mT and magnetization time of 30 min; the best parameters of magneto-electrically coupled water are electrode voltage of 9 kV, electrode ring parameter of 8 cm and electrode spacing of 3.5 cm; the dust reduction efficiency of magneto-electrically coupled solution is higher than that of other two kinds of liquids, and the dust capturing efficiency of magneto-electrically coupled spray is increased by 38.84% compared with that of ordinary water at the time of total dust, and the dust reduction efficiency reaches 91.2%; the dust capture efficiency of the magneto-electrically coupled spray is 38.59% higher than that of ordinary water in respirable dust, and the dust reduction efficiency reaches 82.3%. The droplets are more easily adhered to the surface of coal dust particles under the three working conditions of ordinary water, magnetized water and magneto-electrically coupled solution.