The curvature of the lower leg can be left uncorrected within a certain range. Parents are advised to bring their babies to the hospital for consultation and assessment by a medical professional as to whether the leg shape needs to be corrected. Parents should establish the correct concept that not a straight leg shape is good, most people’s lower limbs are with slight curvature. Most people have a slight curvature in their lower limbs. Children are in the growth and development stage and a slight curvature of the legs is acceptable and does not require special intervention. If a child has a leg deformity such as O-leg or X-leg, and the child is young, he or she can be treated conservatively with cast immobilization and orthopedic braces under the guidance of a doctor, and surgery can be considered if the result is unsatisfactory. If the children’s leg deformity combined with vitamin or calcium deficiency, you can appropriate nutrition, more sunshine, appropriate exercise. Parents are advised to take their children to regular hospitals for examination, and the doctor will assess whether the children’s leg deformity needs to be corrected.