Abstract: Survived forest plant community in Daqinggou which is located in Keerqin sandy land is a special forest ecosystem. Based on field survey, characteristics of community were analyzed, species association of 31 tree and shrub species which have important impact on the whole function of the community were also analyzed. The results were as follows: The deciduous broad-leaved forest consisted of deciduous large-sized and middle-sized phanerophytes with compound leaves, little-sized leaves and middle-sized leaves. The plant species was abundant, there were vascular plants of 106 families, 359 genera, 709 species, and made up 30 percent of the total species in Inner Mongolia. Much species association(including positive and negative association) was found among main woody plants.