Using multidimensional gray dynamic evaluation,comparisons of both static change and dynamic change on desertification control efficiency were studied in Hequ County,Shanxi Province.Meanwhile,change tendencies of land use system were estimated.And six types of change trends were divided,that is,high stable type,middle stable type,low stable type, rising type, descending type,unstable type.Results showed that the desertification control efficiency mainly shows a tendency to rise in the whole county.