The utility model relates to a circumcision device adapting to a glans shape, and belongs to the technical field of medical devices. The circumcision device comprises an inner-ring fixing ring, a fastening twine and a clamp body, wherein the inner-ring fixing ring is an oblique oval-shaped ring, and the middle part of the inner-ring fixing ring is provided with a groove; and a hose is sleeved on the fastening twine, and a clamping ring of the clamp body is an oblique oval-shaped ring corresponding to the shape of the inner-ring fixing ring. During operation, the oblique oval-shaped inner-ring fixing ring is sleeved on a glans to rightly adapt to the shape of the glans, so that the penis can not move relative to the circumcision device if the penis of a patient erects after the operation; the clamping ring of the clamp body can better find a clamping position via the groove in the middle part of the inner-ring fixing ring; and in addition, the hose is sleeved on the fastening twine, so that the foreskin is even in the foreskin fastening process, and thus the accumulation of the foreskin along the fastening direction is avoided. The operation is convenient, the postoperative recovery is easy, the operative wound surface flushes with the coronary sulcus, and the postoperative circumcision part is attractive.