A pressure-sensitive adhesive tape or sheet for application on skin includes a substrate and a pressure-sensitive adhesive layer laminated on at least one surface of the substrate. The pressure-sensitive adhesive layer contains: 100 parts by weight of an acrylic copolymer prepared by copolymerizing a monomer mixture comprising from 5 to 38% by weight of an alkyl (meth)acrylate monomer, from 61 to 90% by weight of an alkoxy group-containing ethylenic unsaturated monomer and from 1 to 10% by weight of a carboxyl group-containing ethylenic unsaturated monomer； and from 30 to 60 parts by weight of a carboxylic acid ester in a paste form or liquid form at room temperature. The acrylic copolymer has been subjected to a crosslinking treatment.
