Children’s inward curvature may be related to congenital factors, rickets, insufficient training, failure to master the correct posture and other factors, depending on the cause of the disease, we can choose medication, exercise and training, orthopedic shoes, surgical correction and other ways. 1. Congenital factors: If it is congenital bone deformity, such as inversion of the knee, or through the general conservative treatment is ineffective, surgical correction can be considered; may also be a normal physiological phenomenon, it is recommended to follow up regularly. 2. Rickets: most of the rickets is due to the lack of calcium or vitamin D3, parents can follow the doctor’s advice to give children calcium, vitamin D3. 3. Insufficient training: parents of children with insufficient training can also cause internal eights, parents need to strengthen the child’s ankle strength, leg strength training, should be assisted to help the child walk straight line, so as to help correct the phenomenon of internal eights, and at the same time, need to correct the bad posture, need to be insisted on for a long time. 4. Not grasp the correct posture: children may not grasp the correct posture due to the internal eight, can wear specific orthopedic shoes to fix the ankle joint, so as to improve the internal eight. It is recommended to go to the hospital in time to find out the cause of children’s inward curvature.