PROBLEM TO BE SOLVED: To provide a denture wearing composition which has an excellent effect of imparting lubricity when wearing a denture, especially a partial denture in an oral cavity, reduces discomfort and gives a comfortable wearing feeling, and a denture wearing method using the same I will provide a. SOLUTION: (A) One or more kinds selected from alginic acid and a water-soluble salt thereof having a viscosity of a 1% by mass aqueous solution at 20° C. of 10 to 100 mPa·s, and (B) a sugar alcohol and a polyhydric alcohol. A denture wearing composition containing at least one kind, more preferably (C) an antibacterial agent and/or (D) water, and the denture in the oral cavity after applying the denture mounting composition to the denture base How to attach a denture to your skin. [Selection diagram] None【課題】口腔内に義歯、特に部分義歯を装着する時の潤滑性付与効果に優れ、不快感を軽減してあたり心地の良い装着感を与える義歯装着用組成物及びこれを用いた義歯装着方法を提供する。【解決手段】(A)20℃における1質量%水溶液の粘度が10~100mPa・sであるアルギン酸及びその水溶性塩から選ばれる1種以上、及び(B)糖アルコール及び多価アルコールから選ばれる1種以上を含有し、更に好ましくは(C)抗菌剤及び/又は(D)水を含有する義歯装着用組成物、及び、この義歯装着用組成物を義歯床に適用した後に義歯を口腔内に装着する義歯装着方法。【選択図】なし