The first thing you need to do is to make a clear diagnosis: O-legs in babies under 1 year of age are a normal physiological process and do not require treatment. Older children with O-shaped or X-shaped legs, clinically known as knee inversion or knee valgus, need to be corrected, through walking posture adjustment, the use of medical equipment, a reasonable diet, surgery and other ways. 1. Walking posture: When the child walks, try to look straight ahead, if there is an inversion, it needs to be corrected in time. 2. Medical devices: If your child’s leg shape is abnormal, you need to consult a physician to assess whether you need to correct the shape of your legs with the help of braces, orthopedic belts, medical shoes, and so on. 3. Reasonable diet: If your child is partial to food, picky eaters, etc., you need to be alert to whether there is a vitamin D deficiency, such as rickets can also lead to changes in the shape of the baby’s legs. 4. Surgery: If your child’s leg abnormality has affected your daily life, we recommend that you seek immediate medical attention and have your legs corrected by surgery if necessary. Children’s leg correction precautions, specific can consult a professional orthopedic surgeon’s opinion.