Based on close investigation and related data,the floristic characteristics of wild seed plants in Huaeshan National Nature Reserve of Sichuan were analyzed and were compared with that of six around districts.The results showed that:(1)the floristic composition is complex with various types.This area contains 2 386 wild seed plant species,which belong to 144 families and 810 genera.There are 11 distribution types of family and 15 distribution types of genera,which account for 73.33% and 100.00% of the total distribution types in China respectively.(2)The dominance of plurimotypic families and genera are obvious,the flora is ancient with abundant endemic genera.(3)The tropical and temperate components account for 60.71% and 38.39% respectively on the family level,and account for 38.32% and 56.34% respectively on the genus level.This reflected its transitional characteristic.(4) Compared with around districts,the floristic composition of Huaeshan is highly similar to that of Dabashan,but is very different from that of Funiushan,Qingmuchuan and Xiaolongshan.Meanwhile,the endemism and tropical characteristics are more obvious in Huaeshan.(5) The floristic composition of Huaeshan is simpler than that of Dabashan,Yintiaoling and Funiushan,is similar to Wulipo and Xiaolongshan,and is more complex than Qimuchuan.