To provide a fixture for concrete buried material wherein a box or the like is fixed in a form, such as a PC form, with ease and reliability, and a form is removed from a box or the like without deforming or damaging the box or the like with reliability.

In the fixture for concrete buried material, an insertion portion 20 is inserted into the opening 83 in a box cover 80, an elastic anchoring lug 22 is bent and recedes toward the inside of the opening 83 in the box cover 80 to allow insertion of the insertion portion 20. After the insertion portion 20 is inserted, the elastic anchoring lug 22 is elastically self-recovered from the bent state, and is engaged with the back face of the opening 83. Thus, it prevents the box cover 80 from separating away from the frame.