PROBLEM TO BE SOLVED: To provide an interdental cleaner capable of suppressing a cleaning part from coming off from a shaft part.SOLUTION: An interdental cleaner comprises: a base part comprising a shaft part (20) having a shape allowing insertion into an interdental space； and a cleaning part (50) covering at least a part of the shaft part and capable of cleaning interdental spaces. The base part has a projection part (40) projecting in a direction crossing the shaft part (20) from a covered part (22) as a portion covered with the cleaning part (50) in the shaft part (20).SELECTED DRAWING: Figure 5COPYRIGHT: (C)2020,JPO&INPIT【課題】清掃部の軸部からの離脱を抑制することが可能な歯間清掃具を提供すること。【解決手段】歯間に挿通されることが可能な形状を有する軸部（２０）を含む基部と、前記軸部の少なくとも一部を被覆するとともに歯間を清掃可能な清掃部（５０）と、を備え、前記基部は、軸部（２０）のうち清掃部（５０）によって被覆される部位である被被覆部（２２）から軸部（２０）と交差する方向に突出する突出部（４０）をさらに有すること。【選択図】図５
