Jinpenshan nature reserve is located at the junction of Longnan County, Nanquan County and Xinfeng County, Jiangxi Province. It is the transition zone between Wuyi Mountains and Nanling Mountains. The nature reserve possesses a variety of species and complex geographical floristic elements. Based on field studies and relevant scientific literatures, this study has statistics and analysis the families, genera and species in Jinpenshan. Results showed: (1) 1 474 species of wild seed plants, distributed in 659 genera of 161 families are found in Jinpenshan. Among them, there are 7 gymnosperm species belonging to 7 genera of 6 families, accounting for 8.43% of total gymnosperm species in Jiangxi (83). Floristic analysis showed, there are 1 467 angiosperm species belonging to 652 genera of 155 families, accounting for 33.58% of total angiosperm species in Jiangxi (4 369). (2) The families of tropical and temperate distribution patterns make ups 64.22% and 35.77% of the total family number (removal Cosmopolitan, the same below), respectively. Tropical distribution is in the dominant position. While at genus level, the tropical and temperate distribution patterns make up 50.95% and 47.55%, respectively. They are nearly equal. At species level，the tropical and temperate distribution pattern makes up 33.98% and 37.15%, respectively. While 419 species endemic to China，accounting for 28.88% of total species in Jinpenshan. （3） The flora possess lots of monotypic and oligotypic genera, with an ancient origin. There are 212 genera of oligotypic genera, accounting for 32.17% of the total, 374 genera of monotypic genera, accounting for 56.75% of the total and 537 genera of minor genera, accounting for 36.43% of the total. （4） Compared with the nearby 6 plant floras, there is a closer relationship between Jinpenshan and Wuyi montains than that of Nanling mountains. More tropical elements was observed in Jinpenshen than that of Yangbiaofeng of Wuyi mountains.