Abstract: Using linear regression equation of estimation temperature change trend and gliding T test method,the detailed analysis was carried out in terms of mean annual and seasonal maximum and minimum temperature series of urban district(1955-2004),Tianzhen(1958-2004) and Lingqiu(1960-2004).The results indicated that the temperature of Datong had gradually increased.There was one abrupt warming in urban district,Tianzhen and Lingqiu.Urban district and Tianzhen abrupt warming were in 1990s to today and Lingqiu abrupt warming was in 1980s to today.The warming of three places obviously happened in winter.For the full year,the warming of urban district's daytime and nighttime were all but equal.Lingqiu warming mainly occurred in nighttime,Tianzhen warming mainly happened in daytime.There was very important significance for studying temperature change characteristics of Datong

Key words: Temperature change, Trend prediction, Glide T-test, Analysis of abrupt change