Abstract: The wetland is a natural landscape which has the most abundant biodiversity in nature and it is the most important human living environment.However,because of global warming,population and the development of social economy,the wetland is facing unprecedented interference and threat,and the wetland biodiversity is declining.This article deals with the different types of wetland biodiversity and the typical wetland and points out the problems of the wetland biodiversity in China and puts forward some protection countermeasures.