Abstract: Based on the daily precipitation data from 81 station in Guizhou province from 1963 to 2010,the number of rainstorm days and the total amount of precipitation were analyzed by linear fitting、5-years smoothing、EOF、correlation coefficients and Morlet wavelet.The results are as follows:①The relation between the number of rainstorm days and the total amount of precipitation were intimate;The correlation coefficients in the Spatial and timely distributions passed the 0.05 significance level.the number of rainstorm days and the total amount of precipitation vibration were consistent,the variation from the number of rainstorm days was advanced than from the total amount of precipitation.② The number of rainstorm days and the total precipitation in south of Guizhou province were excessive in the south,48 stations rainstorm day number is increased,but 77 stations annual rainfall amount rainfall trendswas reduced,they had the consistent reduction in trend in Qianxinan,Zunyi、Bijie and Qiannan,while in the rest tendency was opposite ,the first three EOF eigenvector field of the number of rainstorm days and the total precipitation are consistent; ③The rainstorm and precipitation mainly occurred in May to September,and The number of rainstorm days internal variations were remarkable,the number of rainstorm days increased in the past 48 years,but the total precipitation decreased.