A scanning jig T is provided which enables acquiring the positional relation in space between a patient's face and an abutment 5a. This scanning jig T, for specifying the spatial position of an embedded object, consisting an abutment 5a, etc., embedded in the oral cavity of the patient, is provided with a base part 1 linked to the embedded object, a scanned part 3 having a scanned region 30 scannable with a 3D scanner, and a linking part 2 for linking the base part 1 and the scanned part 3. The linking part 2 is linked at one end to the base part 1 in a prescribed direction and is linked at the other end to the scanned part 3 in a prescribed direction, and when the base part 1 is linked to the embedded object, said linking part 2 has a prescribed length which causes the scanned part 3 to be positioned outside of the oral cavity.
