X-shaped leg is medically called knee valgus, which can be corrected through rehabilitation training, brace fixation and surgical treatment. 1. Rehabilitation training: Correction can be done through joint training, such as sitting on the ground with both legs bent at the knee, both knees open outward, the palms of the feet opposite each other, and pressing on the inner side of the knee joint with the hand to make the inner muscles stretch. You can also do the shuttlecock exercise with both legs alternately, which is good for the correction of knee valgus. 2. Fixation with support: you can wear orthopedic splints, orthopedic belts, orthopedic insoles and other supportive devices for correction. 3. Surgical treatment: patients who are not effective in conservative treatment can also undergo surgical treatment for correction. Most of the knee valgus is caused by rickets, and some patients are caused by congenital genetics, acquired malnutrition, incorrect walking posture and so on. It is recommended that patients under the guidance of the doctor for standardized treatment, do not blindly correct on their own, so as not to cause damage to the body.