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Jinggangshan is situated in southeast of Jiangxi province,and the center part of Luoxiao range,which the geographical position is in N 26°13′04″-26°52′30″,E 113°59′12″-114°18′28″,and it included the seed plant flora about 3193 species,belonged to 210 families and 1003 genera.Jinggangshan’s flora contains abundant endemism,and a lot of endemic families,genera,and species to the eastern Asian Continent.In this paper,the composition and characteristics of endemism was studied,which the results are as follows:(1) It has 7 families endemic to east Asia,contains 8 genera and 34 species; 5 families endemic to China,all are monotypic,such as: Ginkgoaceae,Sargentodoxaceae,Eucommiaceae,Tapisciaceae and Bretschneideraceae; (2) there are 44 genera endemic to China in Jinggangshan,contains 56 species; and about 1,146 species endemic to China;(3) endemic families and genera are the key part of Jiangxi flora,the endemic genera occupies 91.7%of the total 48 genera in Jiangxi province; among the endemic genera and species,there are a lot of rare relict species,such as Ginkgo biloba,Bretschneidera sinensis,Sargentodoxa cuneata,Pteroceltis tatarinowii,Cyclocarya paliurus,Tsoongiodendron odorum,Pseudotaxus chienii,Fortunearia sinensis,Camptotheca acuminata,Gelidocalamus stellatus,etc.,which also are the important relict species in the east China,it indicates the antiquity of Mount Jinggangshan flora;(4) the endemic species of China are rich in Mount Jinggangshan,which has 1,146 species endemic to China,belonged to 131 families,and 423 genera,occupying 36.0% of the total of Jingganshan’s flora,among them,included Rosaceae (70 species),Lauraceae (49 species),Theaceae (43 species),Labiatae (37 species),Papilionaceae (39species),Fagaceae (30 species),Ericaceae (30 species),Asteraceae (29 species) and Aquifoliaceae (26 species),and so on; (5) Based on the cluster analysis according to the geographical distribution information of each endemic species,the results show that the endemic species of China can be divided into five distribution patterns,i.e.South China Subtype 274 species,East China Subtype 239 species,Central China Subtype 192 species,South China to East China Subtype 210 species,East China to Central China Subtype 225 species.The endemic species and their distribution patterns of Mount Jinggangshan Region indicates that this area is located in an intersection of three regions of "south,east and center",and that Jingganshan and center of Luoxiao Rang are the channel of the floristic elements from south to north migration,and also are the natural barrier meet from the east and the west.