To obtain the subject highly safe composition capable of imparting firm feeling in the oral cavity due to constrictive effect, having mitigating effect of pain such as of stomatitis, thus usable in various products for oral cavity such as a toothpaste.

This composition for oral cavity contains a plant belonging to Salicaceae Populus or Salix, or solvent extract therefrom, or at least one kind of ingredient selected from populin, salicin and saligenin. It has been confirmed that this composition is excellent in constrictive activity in its functional assessment using a healthy panel.