An authenticity checking tape is provided to prevent falsification by separating a print layer from a resin film in removing the resin film from a tape body attached on an object, once. An authenticity checking tape(1) is composed of: a resin film(10); a print layer(20) formed on the resin film and printed with patterns or pictures to check authenticity; a resin layer(30) formed by applying flexible synthetic resin on the resin film and the print layer, in order to reinforce binding force with the resin film; and an adhesive layer(60) formed on the resin layer and bonded to the object. A message of the print layer is exposed on the resin film by forming a gap between the print layer and the resin film in separating the resin film from the object.
