Abstract: Dust and smoke were not efficiently reduced under mines by common water-stemming. Based on the analysis of the dust-reduction mechanism of water-stemming, the surface tension and humid capacity of different concentrations of solutions water-stemming were measured in the laboratory, and efficient water-stemming were developed. The results of explosive comparative tests under mines show that the dust density was efficiently reduced by the efficient water-stemming. It is worthy of being used widely, particularly for blasting mines.