Precipitation change inevitably causes the regional water resources rariation. The analysis of the precipitation in Xi ''an and nearby areas has a very significant impact on comprehensive understanding the regional water resources, economic development and policy formulation. On the basis of precipitation data collected from 18 stations in Xi''an region,the spatial distribution of precipitation was analyzed. The result showed that the most precipitation is in southeast, the least is in middle to north, the precipitation has a decreased trend from south to north and increased trend from west to east. For temporal distribution, except in spring the precipitation has a significant decreased trend, the precipitation change in summer, autumn and winter total show no significant, and the future change trend of precipitation is consistent with the existing trend in xi''an. The main periods of yearly and seasonal precipitation are 16 years and 28 years.