PROBLEM TO BE SOLVED: To provide an oral composition that can sufficiently promote the adsorption of a cationic germicide onto tooth.SOLUTION: An oral composition comprises a cationic germicide, a glycoside comprising a glucuronic acid or a salt thereof, a methoxyethylene maleic anhydride copolymer or a salt thereof.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT