Based on the meteorological date of the average temperature,relative humidity,average wind velocity, the maximum temperature,the minimum temperature,sunshine hours and precipitation from 1961 to 2013 in Alar area,we analyzed the climate changing characteristics in Alar area by Penman - Monteith model,climate inclination rate,and Mann - Kendall method. The result shows that: 1) The average temperature and minimum temperature dynamic change trend was" low - high - low",the maximum temperature dynamic change trend was" high - low - high ". 2) The increasing rates of minimum temperature in spring and in summer were the 0.19℃ /10a and 0.044℃ /10a respectively. Meanwhile,the decline rates of average temperature and minimum temperature were the 0.117℃ /10a and 0.004℃ /10a in autumn. The decline rates of average temperature, maximum temperature and minimum temperature were the 0.681℃ /10a,0. 478℃ /10a and 0.606℃ /10a in winter since 1987. Besides,it was going through a dynamic change trend,which was " spring warm - summer warm - autumn cold - winter cold". 3) The climate of extreme dry and precipitation negative anomaly were predominantly before 1990s,and the climate of relative wet and precipitation positive anomaly were predominant since 1990s. The aridity index was greater than 16 and the dynamic change trend was " drying - wetting" aridity index in Alar area.