Abstract: Ecosystem services value of small watershed include product value,regulating services,cultural services,and supporting services.Product services include agriculture products(food,cotton,livestock,fishery),raw materials,and fresh water;regulating services include water egulation,CO₂ fixation,O₂ production,air quality maintenance,water purification,and flood prevention;cultural services include recreation,ecotourism,cultural,and science;supporting services include soil conservation,nutrient cycling,and provisioning of habitat.In this paper,the value assessment methods of all kinds of ecosystem services mentioned above were put forward,which have some significance for the assessment of ecosystem services value of small watershed.