In order to reveal the variation characteristics of extreme precipitation event in baoji and master the occurance rule of extreme precipitation event,the paper based on meteorological observation data sets in Baoji from1952 to 2014,and comprehensively applied general linear regression analysis, Morlet wavelet analysis, R/S analysis and Mann Kendall tests to analyze the variation characteristics of extreme precipitation event.The results show that except the annual rainfall,strong rainfall,days of medium precipitation,and days of great precipitation presented the trend of decrease,the other indexes possessed the trend of increase in study area from 1952 to 2014.The change of extreme precipitation is the strongest, the change rate is more than 1mm/10a. The strong precipitation and the extreme precipitation present the trend of nesting periodicity of large and small scales.The both There were only weak mutations between the both.The future trend of strong rainfall in Baoji will be consistent with the trend of the past showed a reduced trend. The trend of extreme precipitation change and past trend is decreasing trend with reverse trend.In addition, all extreme precipitation indice has positive correlation with annual rainfall and rainfall intensity.The change of annual precipitation may best reflect the change of extreme precipitation index.