Abstract: The paper aims to study the characteristics of temperature variation tendency in southeast of Tsaidam Basin. The authors used linear trend estimation method, moving average method and M-K abrupt analysis to analyze the temperature variation characteristics in southeast of Tsaidam Basin during 1961 to 2016. The results showed that the annual average maximum temperature, the annual average temperature, the annual average minimum temperature, were significantly elevated, the tendency rate of the above temperatures were 0.33℃/10a、0.28℃/10a、0.24℃/10a.The annual extreme maximum temperature was significantly elevated trend with 0.24℃/10a climate tendency rate, the annual extreme minimum temperature was not significant increase trend with 0.17℃/10a. The climate abrupt analysis shows that, The annual extreme minimum temperature 、the annual average minimum temperature 、the annual average temperature and the annual average maximum temperature , the annual extreme maximum temperature, respectively, had a from low to high climate abrupt in 1966,1979,1985 and 1990.