Abstract: Monitoring results of underground water level on Hohhot regions in 2010 showed that the change of underground water level was a large fluctuation on spring and summer,and a relative stability on autumn and winter.Underground water level in 2010 had a decrease comparing with 2009,the decline extent of underground water level on huhhot city and Wuchuan county were apparently higher than last year,and Tuo country was a little more than 2009,other regions were lower slightly.The largest decreasing amplitude of underground water level was appeared on huhhot city in 2010 and the least was on Qingshuihe country.