Based on the rainfall data in the 35 years,the spatial distribution characteristics,variation trend of annual precipitation and period in Shapingba Region of Chongqing municipality were discussed by using SPSS and Excel software.The results showed that the amount of rainfall in the 35 years in Shapingba Region was in normal distribution.According to the analysis on linear tendency of annual precipitation variation and the calculation result of coefficient r index,it was found that the annual precipitation showed an increasing trend in study area.From the departure sequence of rainfall,the change range of positive departure was bigger than that of negative departure and the change of yearly rainfall had obvious stage.The climate drier period and wetter period kept pace with the trend of rain falling and had obvious annual variation.
