A fixture is provided for attachment to a device to be inserted into a nasal cavity. Further, the fixture is a nasal cavity insertion device fixture formed of a wire rod. The fixture includes a first wire rod part, a second wire rod part, and a third wire rod part. The second wire rod part is connected to the first wire rod part and formed by folding back the wire rod so as to be opposed to the first wire rod part. The third wire rod part is connected to the second wire rod part and formed by bending the wire rod so as to be disposed oppositely to a side of the second wire rod part facing the first wire rod part.
