[Objective]The aim was to classify pteridophytes by using SRAP molecular marker.[Method] 27 species of pteridophytes collected from Jinyun Mountain in Chongqing were classified based on SRAP polymorphism.[Result] The results of clustering analysis showed that there was close genetic relationship between Selaginellaceae and Gleicheniaceae,Equisaceae and Dryopteridaceae,Blechnaceae and Dryopteridaceae,Lindsaeaceae and Dryopteridaceae,Aspleniaceae and Athyriaceae.Close genetic relationship between Cyrtomium fo...