Provided is an adhesive sheet comprising a support substrate, an adhesive agent layer (X), a continuous void-containing layer composed of a composition containing an adhesive agent and silica particles, and an adhesive agent layer (Y) that are laminated in this order, wherein the adhesive sheet that has a content by mass of the silica particles in the continuous void-containing layer of 25 to 60%; and when affixed to a surface of various plastic molded articles, the adhesive sheet prevents swelling or lifting, in other words, blistering after a lapse of time, to allow the surface of its support substrate to be smooth and to have an excellent appearance, wherein the adhesive sheet can exhibit excellent blister resistance regardless of the type of adhesive agent, and is furthermore easy to manufacture.