Polydactyly is the most common congenital deformity and surgical treatment is the only means. As a hand deformity surgery, polydactyly is divided into several components: polydactyly removal, deformity correction, and functional reconstruction. The technical and aesthetic requirements are high, and in our hospital, only senior doctors can operate. The following is an introduction to the procedure of polydactyly excision: The following figure shows a 1-year-old 10-month-old child with polydactyly of the right thumb wasseel type 4: excision of the radial polydactyly and preservation of the ulnar thumb. Because the ulnar thumb is skewed to the ulnar side, the first metacarpal osteotomy is also performed. The sketch shows the design of osteotomy orthopedic design, the dotted line in the figure is the design line of osteotomy orthopedic design: cut the skin of the polydactyly, try to preserve the skin of the polydactyly first, so that later adjustment can cover the trauma, remove the polydactyly, pay attention to retain the stop of the greater interphalangeal muscle at the upper stop of the polydactyly. The first metacarpal osteotomy orthopedic design is shown: after wedge osteotomy orthopedic design, the two ends of the metacarpal osteotomy are shown, the ulnar deviation deformity is corrected, and the metacarpal bone is fixed with kerchief pins, the metacarpal bone is well aligned after fixation, the multifidus interosseous muscle stop is transposed and sutured to the radial side of the metacarpophalangeal joint of the thumb with absorbable tendon sutures: the flap is constructed, the longitudinal incision along the flexion and extension side of the finger is avoided, and the incision is closed in layers, the postoperative appearance is shown. The following figure shows a 1-year-old 10-month-old child with polydactyly of the right thumb wasseel staging type 4: postoperative appearance postoperative appearance reset the two ends of the metacarpal osteotomy, correct the ulnar deviation deformity, and internal fixation with a kerchief needle, after fixation the metacarpal bone is well aligned after wedge osteotomy orthopedic figure shows the polydactylus interosseous muscle stop is transposed with an absorbable tendon suture on the radial side of the metacarpophalangeal joint of the thumb: after wedge osteotomy orthopedic figure shows incision of the polydactylus Skin, multifinger skin first try to preserve, so that later adjustment to cover the trauma, the multifinger will be removed, pay attention to retain the greater interphalangeal muscle stop on the multifinger stop the greater interphalangeal muscle stop needs to be reconstructed on the radial side of the metacarpophalangeal joint of the thumb to restore the function of the thumb to the palm, Figure shows the greater interphalangeal muscle on the multifinger stop: postoperative aluminum splint or plaster external fixation is required, three to four weeks after surgery to remove the gram to start functional exercise. Multifinger surgery is more involved and has high aesthetic and functional requirements, so specialist consultation is recommended.