Abstract: Field vegetation survey was conducted in Songyinxi wetland from 2022 to 2023 in Songyang, Zhejiang Province. The vegetation in Songyinxi wetland can be divided into 4 vegetation type groups, 9 vegetation types, and 57 specific formations. The distribution of vegetation in the Songyinxi wetland depends on the growth habits of the dominant species, meanwhile is mainly influenced by environmental factors such as substrate, water flow, and water level. The dominant stress factors included ecological factors such as invasive alien species, as well as disturbance, environmental pollution and embankment solidification.