There are physiological and gait deformities in children’s walking. Physiological deformities usually require no treatment, while gait deformities can be corrected by wearing orthopedic shoes or by surgery. Because the baby in the womb, as well as after the birth of the legs are mostly in a curled state, so in the beginning of walking, most of the walking gait of the internal eight, this is physiological, with the walking posture and gait of the maturity of the day, this phenomenon will change. In addition to physiological reasons, some children do have gait deformities that require clinical intervention, usually with orthopedic shoes, and depending on the severity of the deformity, it can take 2-3 years or even longer, so the earlier the treatment, the better. Some severe deformities also require surgery. But when the calf bends seriously, it may be rickets or systemic diseases of the skeleton, so found that the children walking eight, it is recommended to take the child to the regular hospital pediatric orthopedics, pediatric orthopedic examination by specialists to determine the specific causes, to give targeted treatment.