There are 463 species of xylophyta, belonging to 166 genera and 70 families in Shanxi, China. The floristic geographic composition types of the genera and the species are abundant, in which the temperate compositions (including North Temperate, Old World Temperate, Temperate Asia & Central Asia) are dominant, they are constructive or dominant species of vegetation in Shanxi. Moreover, the floristic geographic compositions of xylophyta of Shanxi, Hebei, Beijing, Shandong, Henan, Jiangxi and Inner Mongolia were studied by using diversity index, principal component analysis and group average method, respectively, and the results indicated that the floristic geographic composition of Shanxi was considerablly similar to that of Hebei, Beijing and Shandong, however, the floristic of Shanxi was comparatively different from that of Henan, Jiangxi and Inner Mongolia.