To provide a shielding adhesive sheet for electromagnetic waves whereby such a medical appliance mounted in a human body as a cardiopacemaker is protected from malfunctioning due to external electromagnetic waves, etc.

A shielding adhesive sheet for electromagnetic waves comprises an adhesive agent layer formed on the single side of an expansive sheet including a conductive sheet. The conductive sheet is the one selected from a metallic foil, a plastic film having a deposited metal thereon, a dishcloth made of a metallic fiber, and a dishcloth coated with a metal. The adhesive agent layer is preferably formed by applying a coated pattern thereto. The shielding adhesive sheet for electromagnetic waves is used by sticking it directly on the surface of a human skin or indirectly on the clothes of underwear, etc.