A double-stick adhesive tape (10) for fixing a wig (100) to a head, of which the surface of at least one side (12) of both sides of adhesive layers (12, 13) on a core material (11) is deglossed by forming minute concavity and convexity (12a), one side of adhesive layer (12) is formed to have a thickness to bury at least more than half of a wire diameter of the filament (103) used as a net member of a wig base (101), thereby one side of adhesive layer (12) is set inside of a network (104) of the net member, and bonded to the net member, a filament (103) is peripherally bonded with the adhesive layer (12) and the other adhesive layer (13) is bonded to the head.