Foot congenital deformity plastic surgery is more about the reconstruction of the arch, especially the reconstruction of the transverse arch of the foot. The intraoperative design is very important. The main attention of split foot is 1. the sequence of metatarsals is reconstructed according to the direction of stress; 2. the transverse metatarsal ligament is reconstructed at the split to repair the transverse arch; 3. the split concave is repaired with attention to not leaving a dead cavity and the docking of the skin edge should be proportional. As long as these aspects are taken care of, the surgical result will be good. Patient, female, 5 years old, with congenital developmental malformation of both feet and split foot. Look at the picture: preoperative preoperative X-ray: left foot skeleton: fourth toe skeletal deficiency preoperative X-ray: right foot skeletal developmental deformity is obvious: third metatarsal deformity preoperative left foot marker bony part plantar flap design peel flap and reconstruct transverse arch end of surgery end of surgery left foot marker bony part plantar flap design end of surgery end of surgery end of surgery dressing one month after surgery one month after surgery one month after surgery, right foot correction skeleton part of bone scab has been generated