In Taiyuan urban region, there are 177 species of seed plants, belonging to 65 families and 124 genera in the 48 streets investigated. The flora analysis of the geographical elements showed: 1) Remarkably predominant genera of south temperate Asia folly indicate then-temperate characteristic. At the same time, the seed plants scatter equably in most of the families. Big families don't take dominant position in Taiyuan urban flora. The flora are influenced by the human being's planting activities...