An endoscopic mucous membrane lifting instrument includes: a cap mounted at a distal end of an insertion portion of an endoscope device a first wire disposed at the cap and configured to be capable of protruding from an outer circumferential portion of the distal end of the insertion portion toward a direction more distal than the insertion portion and in a direction approaching an extension line of a central line of the insertion portion a second wire disposed at the cap and be capable of protruding from the outer circumferential portion of the insertion portion along the central line of the insertion portion in the distal direction than the insertion portion and a wire-manipulating portion configured to independently operate the first wire and the second wire.
