The precipitation and evaporation (measured by 20cm caliber) observation data during 1960—2009 in Changji city are analyzed using the methods of cumulative anomalies and linear tendency estimation.The results indicate obvious interannual variations in Changji's precipitation and evaporation at both annual and seasonal level.In the past 50 years, the annual and seasonal precipitations changed in significant linear trends, with increasing trend in the whole year, spring, summer and winter, while a slight decreasing trend in autumn.The evaporation decreased in significant linear trend in Changji city during 1960—2009.Thus, it can be concluded that the climate in Changji was generally getting wet in the past 50 years.