To provide an installation jig capable of performing an installation operation while easily securing safety.

The installation jig 10 represents an installation jig 10 which is an auxiliary component part for installation of equipment, and functions as a temporal tacking mechanism. The installation jig 10 includes a jig body 11, an engagement groove 12, a hook part 13, and a claw part 14. The engagement groove 12 is locked by making a screw inserted into a screw hole penetrate therethrough to be terminated at a groove end 12a. The groove end 12a is formed at a position opposed to a screw hole formed in an installation place, for installing the equipment in the installation place. A portion of the equipment is hooked to a projection comprising the hook part 13 and the claw part 14, and the equipment is placed at a predetermined position in the installation place.