A clip fixing jig for fixing a clip member in a molding die for molding a seat pad has a wall part erected along a whole outer peripheral edge of a bottom part thereof. The wall part forms, above the bottom part, an accommodation space for accommodating extending parts. The clip fixing jig has fixing parts for detachably fixing a clip member, so that a clip member can be fixed to the clip fixing jig by inserting the clip member in the accommodation space. With a clip fixing jig provided in a molding die, a seat pad can be formed by insert molding, so that workability in clip member fixing work is improved.