Leg binding is not recommended for two year old babies with ropy legs. The appearance of rotund legs is mostly due to the lack of vitamin D and calcium, and there is no obvious correlation with whether or not to carry out leg binding. It can be improved by general treatment, medication and surgery. 1. General treatment: some patients with rotator cuffs can be corrected with braces, but its effect is not certain. The rotundity caused by vitamin D deficiency rickets is corrected by increasing sunlight hours to promote skin production of vitamin D, as well as by vitamin D supplementation. 2. Surgery: Surgery can be performed to correct the inversion of the knee in patients with severe deformity when conservative treatment is ineffective. Surgical correction includes osteotomy, etc. There may be other reasons for the two-year-old baby’s rotund leg, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. All of the above medications should be used under the guidance of a doctor.