Ways to improve O-shaped legs include changing habitual postures, supplementing calcium, conservative treatment, surgical treatment, and so on. 1. Changing habitual postures: for example, walking posture, do not walk in an outward-facing position; standing posture, do not stand with the center of gravity on one leg; sitting posture, do not sit with legs crossed, sitting on a plate, kneeling; sleeping posture, do not sleep with crossed legs. 2. Supplementary calcium: for children is very important, can be supplemented in moderation. Commonly used drugs include calcium gluconate oral solution. 3. Conservative treatment: Splints, leg straps, ortho-O instruments and other limb devices can be used in conjunction with the treatment, while strengthening the functional exercise. 4. Surgical treatment: severe patients can take u-shaped osteotomy. If you want to improve the O-shaped leg, it is recommended to go to the hospital, under the guidance of the doctor for formal training and treatment. Calcium medication should also be applied under the guidance of a pharmacist or doctor to avoid blind use of medication to produce adverse reactions.