PROBLEM TO BE SOLVED: To provide an interdental brush which is excellent in cleaning power while having a good contact feeling against gums and teeth, has a high cleaning feeling, and has no axial bending. An interdental brush of the present invention has a head portion 12 having a length in one direction and a brush portion 11 around an axis, and a handle portion connected to one end side in a direction along a central axis of the head portion. 13, the head portion has a hard resin member having a shaft body extending in the axial direction and a head provided at the tip of the shaft body, and a soft resin member covering the outer peripheral surface of the hard resin member. And, and the maximum diameter of the head is larger than the diameter of the tip of the shaft body. [Selection diagram] Figure 1【課題】歯肉や歯に対する当たり心地が良好でありながら刷掃力に優れ、清掃実感が高く、軸曲がりのない歯間ブラシを提供する。【解決手段】本発明の歯間ブラシは、一方向に長さを有するとともに軸回りにブラシ部１１を有するヘッド部１２と、ヘッド部の中心軸に沿う方向における一端側に接続されるハンドル部１３と、を備え、ヘッド部は、軸方向に延在する軸本体と、軸本体の先端に設けられる頭部と、を有する硬質樹脂部材と、硬質樹脂部材の外周面を被覆する軟質樹脂部材と、を有しており、頭部の最大径は、軸本体の先端の径よりも大きい。【選択図】図１
