Abstract: Based on the monthly air temperature data，temperature change trend were analyzed by applying linear regression，Kriging spatial interpolation method，non—parametric test 1 trend test and mutation test of Mann—Kendal method and wavelet analysis method for the period of 1901—2009 for the Republic of Tajikistan，The results showed that：1)From the tem． poral change perspective，the mean annual air temperature increased significantly during the last 100 years，with a cooling peri— od from 1901 to 1908 and from 1915 to 1960 and a warming period from 1909 to 1914 and from 1961 to 201 1，The mean air temperature of four seasons all had a wanning trend and alternated between cooling period and warming period but finally with warming trend，especially warming stronger in winter．Annual mean average temperature of four seasons and annual mean air temperature temperature had the abrupt changes and showed a significant increasing trend after it．The annual mean temperature and the mean temperature of spring，summer，autumn and winter had a 27a，27a，12a，20a and 24a prospective change cycle， respectively．2) From the spatial change perspective，the cooling trend(1901～1960) and the warming trend(1961～2011) presented in almost complete aera of Tajikistan，and had a significant increasing and decreasing change in 1931～1960 and 1991～201 1，respectively．