Abstract: In this research,we studied the characteristics of the flora and community,and diversity of species in the mixed evergreen and deciduous broadleaved forest of Houhe Nature Reserve,Hubei Province.The forest consists of 110 families,288 genera,and 534 species.The majority of the families are tropic types,in the degree of genera,temperate types are dominant,which reflects the characteristics of sub-tropic flora with the temperate types as the dominant types.Most of the plants in the forest are evergreen and deciduous broadleaved phanerophytes with simple leaf,mesophyll and non-entire leaf.The stratification of the vertical structure of the plant community is obvious.From the top to down,the proportion of deciduous broadleaved trees decreases gradually,while that of the evergreen broadleaved ones increases.The diversity indices are equal in different fields except two of the fields with low altitude.