Abstract: Based on the statistics and analysis of the seed flora in Huolongou Nature Reserve,the results have indicated that its floristic elements are complex and its types are rich.There are 82 families,302 genera,649 species in Huolonggou Nature Reserve,among which gymnosperms have 3 families,6 genera,16 species and angiosperms have 79 families,296 genera,633 species.The geographical element are complex,and the range type are abundant.The dominant families and genera are obvious.The origin of the seed flora is ancient.The endemic phenomena are rich.