Based on the data of GNIP, we investigated the temporal and spacial variation characteristics of stable isotope of 7 stations(Lanzhou,Yinchuan,Jingbian,Xi'an,Pingliang,Baotou,Taiyuan)in Loess Plateu,except for Jingbian,and analyzed the correlation between theprecipitation isotopic content and temperature,as well as precipitation,so as to reveal the regularity of the stable isotope related. The resultsshow that: (1) the stable isotopes of precipitation in the Loess Plateau has a similar temporal change characteristics in different regions, anddifferent spatial change characteristics;(2) the Local Meteoric Water Line: δD=7.0δ18O+0.36‰ was established for the Loess Plateau;(3)there are significant spatial characteristics of the temperature and rainfall effect at the stations in the Loess Plateau;(4) there higher windspeed, lower humidity and stronger evaporation in winter than those in summer in the Loess Plateau.