Abstract: [Objective]Based on the investigation of Spring-Autumn deteriorate grassland communities, [Method]species community characteristics and vegetation quantity were analyzed, the findings from the analysis are follows: there are regularity between the community Diversity index.The community deversity were as follows:LD>MD>HD>ED and the homogeneous degree were as follows:MD>LD>HD>ED; meanwhile, heavy and moderate-degraded were unstable period of degradation.