PROBLEM TO BE SOLVED: To provide a polymer gel formulation for oral use which exerts a high stain removing effect in the oral cavity, removing staining even in the gaps between teeth, only by chewing.SOLUTION: This polymer gel formulation for oral use comprises (A) a partially neutralized polyacrylic acid blended with (B) an aluminum compound. Further, the polymer gel formulation for oral use is blended with (C) 10 to 90 mass% of water and/or (D) 10 to 80 mass% of polyhydric alcohol.SELECTED DRAWING: None