Hail suppresion experiment have been conducted in Shangqiu area, Henan provice for three years (1990- 1992). Data of the historical thundstorm and hail damage areas in the experimentcal period were applied to the analysis of the results. It is shown that the hail damaged farrnland was decreased by 0. 48 million Mu per year. The ratio of investment to benefits is 1:25. All experiments have obtained financial support from the insurance companys.