PROBLEM TO BE SOLVED: To provide a semi solid medicine for an oral cavity excellent in coating properties to the diseased part of mucous membrane in oral cavity, and retentivity in the diseased part after application, and reduced in stringiness and stickiness by an adherent substrate.SOLUTION: A semi solid medicine for an oral cavity contains hypromellose and sodium polyacrylate.【課題】口腔内粘膜患部への塗布性、塗布後の患部での保持性に優れ、付着性基材による曳糸性・べたつきを軽減した、口腔用半固形剤を提供する。【解決手段】ヒプロメロースおよびポリアクリル酸ナトリウムを含有する口腔用半固形剤。【選択図】なし