Abstract: The paper aims to study the characteristics and law of temperature change in recent 54 years in Tianjun by using the temperature data of Tianjun station in 1961-2014 and the linear trend, Mann-Kendall mutation test and R/S analysis methods. The results showed that in recent 54 years, the annual and seasonal average temperature, the maximum and minimum temperature showed a significant upward trend in Tianjun, and the winter warming was most significant. The diurnal temperature range showed a significant downward trend. The warming rate of the maximum temperature was less than that of the minimum temperature, there existed an asymmetry change. The annual average temperature, the maximum temperature and the diurnal temperature range had mutations in 1994, 1995 and 2000, respectively. And there existed obvious Hurst phenomenon in the annual and seasonal average temperature, the maximum and minimum temperature and the diurnal temperature range.