There is provided an adhesion type denture adhesive having superior cleanability, which can be easily removed from a denture base and an oral mucosa for cleansing after the use, while possessing a superior force for stabilizing a denture. The denture adhesive containing a water-soluble polymer as a main ingredient, and containing 0.5 to 60% by weight of an alginate and 0.1 to 20% by weight of calcium sulfate contained therein.