PURPOSE: To provide a member fixing tool by which a driving-in layer is not inconveniently disrupted at driving-in time.

CONSTITUTION: A member fixing tool contains an outer cylinder 1 having a flange 1b on one end of a cylinder main body 1a, a pointed part 1d which is integrally bent and formed on the other end of the outer cylinder 1 or is fixed as a separate body, a shaft 2 which is inserted from one end of the outer cylinder 1 and has a head one end, a bar-shaped anchor member 4 which is interposed between the other end of the shaft 2 and the pointed part 1d and is integrally formed with the shaft 2 or is fixed as a separate body and a separable spacer 6 interposed between the outer cylinder flange and the shaft head, and is formed so that a thickness of the outer cylinder 1 is made thinner than the other outer cylinder part in the circumferential direction.