Since the feet of children at this age are relatively soft, as the time of standing and walking becomes longer and longer, their foot deformation becomes more and more serious (such as flat feet, valgus hind feet, etc.). The occurrence of sequelae is becoming more and more common (such as X-shaped legs, joint strain, etc.), and the alignment relationship between the foot and the ankle joint can be re-determined through the orthopedic shoes, and the movement of the ankle joint can be controlled and its stability can be maintained to achieve fixation and avoidance. He and reduce joint strain.