A patch comprising a support (1), an adhesive layer (2) laminated on one surface of the support, and a peeling film (4) peelably attached to the adhesive layer and having a slit (42) extending from one edge thereof to the other opposing edge, characterized in that the peeling film's slit has a wavy form so that, when an exposed surface of the adhesion layer exposed by peeling off a part of the peeling film along the slit is kept pasted to a patch portion (S), the remaining edge portion (44) along the peeling film's slit can quickly project from between the patch portion and the adhesive layer by merely bending the support slightly along the slit.