Abstract: It is first published that there are 686 species of vascular plants of wetland in Shanxi Province, which belong to 308 genera and 83 families. Among them there are about 8 families, 10 genera, 18 species in Pteridophyta. 56 families, 223genera, 504 species in Dicotyledoneae and 19 families, 75 genera, 164 species in Monocotyledoneae. There are various geographical elements among genera, in which the temperate elements take dominant position and make account for 76.9% except cosmopolitan genera. This phenomenon is the result of the broad latitudes and diversified habitats in Shanxi. Cosmopolitan elements has 74 genera. The elements accounts 24% in total genera, and is main components or key genera in wetland vegetation. Endemic of China is scarce in the flora.

Key words: Wetland, Vascular plant, Flora, Diversity, Shanxi