PROBLEM TO BE SOLVED: To improve user's satisfaction. A first operating member (10A) having a first engaging portion and supporting one side of a floss (20) for interdental cleaning, and a second engaging portion, the other side of the floss. A second operating member 10B for supporting the first operating member 10B and the second operating member 10B from a separated state in which the first operating member 10A and the second operating member 10B are separated from each other. An interdental cleaning tool, the state of which changes to a connected state in which the first operating member 10A and the second operating member 10B are connected by engagement with an engaging portion. [Selection diagram] Fig. 5【課題】使用者の満足度を向上する。【解決手段】第1の係合部を有し、歯間清掃用のフロス20の一側を支持する第1の操作部材10Aと、第2の係合部を有し、前記フロスの他側を支持する第2の操作部材10Bと、を備え、前記第1の操作部材10Aと前記第2の操作部材10Bが分離している分離状態から、前記第1の係合部と前記第2の係合部との係合により前記第1の操作部材10Aと前記第2の操作部材10Bが結合している結合状態に状態が変化する、歯間清掃用具。【選択図】図5