Provided is an oral composition whereby protein staining on a tooth surface can be adequately removed, and adhesion of protein staining to a tooth surface can be effectively prevented, and which also makes it possible to satisfactorily perceive a cleaning effect inside the mouth. An oral composition containing the following components (A) and (B): 0.005% by mass to 0.3% by mass of N-acylamino acid or a salt thereof (A) and 0.005% by mass to 0.5% by mass of pyrophosphoric acid or a salt thereof (B), the mass ratio ((B)/(A)) of component (A) and component (B) being 0.05 to 40, and the total content of component (A) and component (B) being 0.01% by mass to 0.6% by mass.本發明提供一種口腔用組合物，其可充分地去除存在於牙面上之蛋白質污垢，並且亦可有效地防止蛋白質污垢對牙面之附著，亦可於口腔內良好地感覺到其清除效果。該口腔用組合物，其含有以下之成分(A)及(B)：(A)N-醯基胺基酸或其鹽0.005質量%以上且0.3質量%以下、及(B)焦磷酸或其鹽0.005質量%以上且0.5質量%以下，且成分(A)與成分(B)之質量比((B)/(A))為0.05以上且40以下，並且成分(A)與成分(B)之含量之合計為0.01質量%以上且0.6質量%以下。
