The earlier a child is treated for O-legs, the better. This is because as the child grows up, the bones will become harder and harder, which will make corrective treatment very difficult. The earlier the best time to correct O-shaped legs, the better. During infancy and childhood, there will be a physiological deformation of the child’s leg shape, which may be mildly O-shaped or X-shaped. This condition usually does not require special treatment, but rather observation to see if the symptoms are reduced or aggravated as the child grows. If after one and a half or two years of age, the O-shaped legs still exist and do not get better, it is recommended to go to the hospital for examination to find out the specific causes, such as the presence of rickets, etc., and then according to the doctor’s recommendations for treatment.