Abstract: Using the annual average temperature, maximum and minimum temperature data during the year 1959-2013 of the Kezuohou Banner station, the correlation analysis showed that, the climate changed significantly, and the rising range of the minimum temperatures are obviously higher than that of maximum temperatures, it showed that the warming of day and night was asymmetry and led to decrease the diurnal temperature range. The temperature warming in winter is finest achievement in the annual temperature variation. Since the the climate warming began in 1960s, it had been exceed the significant level in the early of 1980s.The response of maximum temperatures to warm was far behind the minimum temperatures.