In this paper,the effects of different climatic states on climate change in the Tianshan Mountains were discussed based on the data of monthly temperature and precipitation from 26 meteorological stations during the period from 1961 to 2015.The purposes of this study were to provide more scientific and objective bases for monitoring,assessing and studying climate change in the study area.Research shows are as follows:① The east Tianshan Mountains was a sensitive region to the temperature change under different climatic conditions,and the northern slope of the mountains was a sensitive region to annual precipitation change.Based on referring the change of Ⅳ state during the period of 1961-2015,the analyzed results of temperature elements and precipitation elements under State Ⅰ (1961-1990) and State Ⅱ (1971-2000) were higher,but those under State Ⅲ (1981-2010) were lower;② By taking the mutation time of Ⅳ state as the criterion,there was holistically no mutation of temperature under State Ⅰ,but the mutation of temperature under State Ⅱ became earlier and that under State Ⅲ became later;③ The grades of temperature and precipitation under State Ⅰ and State Ⅱ were lower,but those under State Ⅲ were higher.There were no the effects of different climatic states on the precipitation anomaly,and the effects of State Ⅲ on the temperature anomaly were the lowest;④ Both the positive change and negative change occurred when the different climatic states were used to analyze the same elements in the Tianshan Mountains.Moreover,it is necessary to use multiple elements in making an objective evaluation on the analyzed results of climate change using the climatic criterion.