O-legs generally refers to knee inversion deformity. For patients with mild symptoms, they can be corrected by conservative methods, such as plate support and wearing corrective braces; if the symptoms are more serious, they need to be improved by means of deformity correction surgery. 1. Plate support: Long-term plate support exercise can make the bad leg shape get some correction. The core of plate support exercise is to keep the body in a straight line, so during the exercise, the legs must be in a straight line, and the longer you insist on it, the more obvious the effect of leg shaping will be. 2. Wearing corrective braces: After the appearance of O-shaped legs, you can choose the O-shaped leg correction belt to correct, which is the simplest way to correct. When you sleep, you can put your legs together, and then use the corrective belt to tie the O-shaped leg, the corrective belt needs to be used for a long time. 3. Deformity correction surgery: If the O-shaped leg is serious with joint deformation, it needs to be corrected by osteotomy, and it should be taken care of actively after the surgery, and no strenuous exercise should be done immediately. O-shaped leg correction, should be under the guidance of specialists according to the specific degree of choice of appropriate treatment.