Abstract: Based on weather station data and snowfall data from the target area and the contrast area, the effect of artificial snow dispersal in Zeku County of Qinghai Province from January to May 2017 is analyzed with double contrast method. The design of the operation for artificial snow dispersal is discussed and the mechanism of the operation is analyzed by physical investigation.According to the research results, the change of liquid water content before and after the four operations proves that the selected operation height was appropriate, with proper water vapor conditions. After operation, the echo intensity decreased, so did the echo volume. Although the echo continued to develop, the duration shortened. Based on double contrast method, it is found that, for the four experiments, the relative reduction of snow is 1% and the absolute reduction of snow is 0.03 mm. The quantitative statistical analysis of the operation processes and the qualitative analysisof the observation data show that the artificial snow dispersal has a certain effect on snow reduction. However, it may also increase the snowfall with improper operation. Hence the technical feasibility and plans for artificial snow dispersal have to be validated and summarized by a large number of experiments.