Climate change will affect the structure and function of regional ecosystems.Vegetation cover is an important index to study the response of different types of vegetation to climate change.We used remote sensing and GIS technology to investigate the characteristics of vegetation change of different vegetation types in Hulun Buir Grassland in the past 1981~2012 years,and analyze and the relationship between these characteristics andwith climate change factors of different vegetation types in Hulun Buir Grassland in the past 1981~2012 years,in order to reveal the response law of vegetation cover to climate change.We conclude that:(1) The climate in of this the region changed significantly before and afteraround 1998.The average annual average NDVI (Normalized Difference Vegetation Index) of vegetation fluctuated slowly between from 1981 toand 1999,and the average annual average NDVI of vegetation fluctuated significantly changed a lot between from 2000 and to 2012.(2) The average annual average NDVI of forests and wetlands in the region increased during the 32 years,and the interannual fluctuations were relatively stable.The NDVI was positively correlated with the temperature,and it waswhile negatively correlated with the precipitation.The average annual average NDVI of the steppe decreased,and the interannual fluctuations was stronger,and there was an extremely significant positive correlation with the precipitation (P <0.01),but an extremely significant negative correlation with temperature (P <0.01).The results showed that steppe has a stronger responsive to climate change than forest and wetland,and is greatly influenced by precipitation.In addition to the influence of overgrazing,it has a weak adaptability to climate change.