Abstract: During 2020,as locally typical edible seaweed products,93 seaweed samples including Laminaria japonica,Enteromorpha clathrata (Roth)Greville,and Undaria pinnatifida Suringar were randomly collected from farm product markets,supermarkets,wholesale markets and aquiculture sites at Zhoushan urban Area,as well as Dinghai,Putuo,Daishan and Shengsi counties,Zhejiang,China,to investigate and monitor their cadmium contents.Then we evaluated health risk classification of dietary exposure to cadmium in three edible seaweeds on the results based on Guidance for Risk Classification of Food Chemicals established by China National Center for Food Safety Risk Assessment.It showed that the contents range of cadmium in three edible seaweed samples were form 0.176 to 2.13 mg·kg^-1b.w.and the content (mean±SD)grade was,in the order,U.pinnatifida Suringa>E.clathrata(Roth)Greville﹥L.japonica.The result of health risk classification assessment of dietary exposure to cadmium in three typical edible seaweeds exhibited that health risk levels in adults from dietary exposure to cadmium through L.japonica,E.clathrata (Roth)Greville,and U.pinnatifida Suringar were all low. L.japonica contributed the most to the dietary exposure of adults to cadmium,accounting for 73%-74% of the total exposure to cadmium from three seaweeds.