The species and diversity of urban natural herb plants in Jilin city were investigated and studied in this paper. The result showed that there were 80 species of herb plants, with 32 families and63 genera. The species of composite plant was the most more than the other families, and the gramineous species was the second one, then the polygonaceae species etc. According to thespecies importance value, the dominance of Chenopodium Glaucum was the first largest, the second to Plantsgo asiatica, Chenopodium Album and Echino chloa frumentacea etc. The diversity indexes on family, genus and species were calculated, and the Shannon-Wiener indexes were orderly 1.0670, 1.4214 and 1.5645, the evenness indexes were 0.3079, 0.3431 and 0.3570, and the dominant indexes were 0.1238￡?0.0629 and 0.0424 in turn.
