[Problems] To ensure the sharpness of a stripping knife whereby a part of a living tissue is incised and stripped while preventing a cut along the thickness direction.[Means for Solving Problems] A stripping knife (A) having a plate-shaped blade (3) having an edge (1) around the periphery, a shank (5) connected to the blade (3), and a handle (7) holding the shank (5) in the integrated state, wherein the blade (3) is composed of the edge (1) formed at the front end and a guide face (2) which is formed between the edge (1) and the front face (3b) of the connected plate constituting the blade (3) and brought into contact with the surface (13) of the remaining tissue.