Abstract: The typical vascular plants of wetland in Beijing comprise 266 species,7 varieties and 1 form,which belong to 144 genera and 58 families.Based on the species level,the geographic distribution of vascular plants in the flora can be divided into 14 types.The total of temperate species is 187,which contribute to the flora a lot,while there are 45 cosmopolitan species,30 tropical species and 12 Chinese endemic species.As to the flora of vascular plants of wetland in Beijing,its constitution is familiar with the flora of wetland in other provinces of North China.There is a dominance of temperate species,and the flora as well as contains some archaic species and endemic species.Furthermore,threatened species and invasive species are also discussed.