To provide an adhesive cleaner capable of facilitating the insertion and fitting of a cap into an adhesive sheet roll and preventing its easy falling down when used.

The cap 3 in which a substantially U-shaped plate spring 34 is extended and provided at a tip of an insertion part 31 is inserted and fitted into a winding core 21 of the adhesive sheet roll 2 wound around by bringing an adhesive layer to the outside, and the adhesive sheet roll 2 is turnably held on a pair of support arm rods 11 of an adhesive cleaner main body 1.