The Xiang hai Natural Reserve is one of the most important natural reserves of China, and it is of great biological, economic, social and cultural significance. Wetland is a essential component of the reserve's landscape, and the Xianghai wet land is one of th e 7 International-importance wet lands in China. The ecoenvironmental and reso urces functions of the Xianghai Reserve wetland are analyzed. The eco-envi ronmental functions mainly include biodiversity maintaining functions, hydrological transition zones, pollutants filter and interception functions, and the resource functions mainly include water and soil resources, biological resources,recreational and educational values, and scientific and cultural fuctions.