Under the background of global climate change, it is very important to looking for and establish a clear relationship between precipitation and environmental factors, which could establish certain theoretical basis and effective method for future quantitative prediction on precipitation and changing environment. The relation between precipitation and four environmental factors, including air temperature, relative air humidity, sunshine duration and wind speed of different counties in Guanzhong area, Shaanxi province were analyzed. The results showed that temperature showed a significant response to 25%, 50% and 75% precipitation, and the response degree of precipitation to the relative air humidity had the second place after that, the air humidity showed strongest effect to 5% richest precipitation; Sunshine duration also showed a rather closely relationship with different frequency precipitation; But wind speed showed no obvious effect to different frequency of precipitation. Higher temperature, higher the relative humidity and the more sunshine hours were advantageous to the precipitation abundantly copious in Guanzhong area. The research could improve the further research on changing characteristics of the environment in loess area, and provides the basis for ecological environment construction and reasonable exploring and using of water resources.