Abstract: The normal distribution and Gamma distribution of precipitation in Yangtze River Basin were analyzed by using monthly and seasonal precipitation data at 712 stations from 1951 to 2015. The results show:most stations passed Gamma distribution test for monthly precipitation, and small part of stations for normal distribution test. The stations that passed the Gamma test showed spatio-temporal differences, such as those in Poyang Lake and Dongting Lake are good on Gamma distribution for January, July-December, and few sites that passed the Gamma test from February to June. For seasonal precipitation, the normal distribution is more popular than those in the Gamma distribution. The normality for spring and winter was better than that for summer and autumn. The Gamma distribution, in spring and summer are better than that in autumn and winter. a nother part of stations obeyed both distributions or disobeyed each of.