Based on 49 single rainfall data from the Lushan County station of soil and water conversation in He'nan Province,various values of rainfall erosivity were calculated using the RUSLE,CREAMS,RICHARDSON and a revised model of daily rainfall amount developed by Guoxinbo,respectively.Results show that model efficients are 0.78±0.55,0.57±0.34,0.45±0.22,respectively.Tested results show CREAMS modol is better than other two models,but it is not appropriate to direct use.The better parameters should be found in future.