Abstract: Based on the annual mean temperature data of Arhorqin Banner Meteorology Burea from 1960 to 2009,the trend of temperature change was analyzed in recent 50 years.The test analysis were conducted on annual mean temperature of whole area with the three methods of Moving test technique,Yamamoto methods and Mann-Kendall methods.It showed that：on the timescale of 50 years, there was an obvious truth of warming and abrupt change on the temperature of Arhorqin Banner,abrupt change point was 1987.