According to the results, we find that the components of seed plants mainly belong to north temperate distribution-type, and the genera number is 389. Then the tropical distribution-type isnext to it, with 289 genera. In addition, some special distribution in East Asia and in China is also one of the very important ingredient of the flora, and the genera number is 139. From this point of view, we can draw a conclusion that the flora of this region not only contains abundant tropical and temperate components, but also represents the important role of the flora of Wulingyuan in Middle China. Furthermore, there are also lots of rare, precious, ancient, and primitive plant components.