The correction of short and long legs in infants includes both exercises to correct non-bone tilt and corrective exercises to correct bone tilt. 1. Exercise for non-bone tilt. Long and short legs in infants can be caused by scoliosis resulting in unequal length of both lower limbs, which should be corrected first by correcting the original disease, scoliosis or back muscle spasm. Other causes of unequal length of the lower limbs include contractures of the knee and ankle joints, which should be counteracted by exercising the corresponding joints and muscle groups. Treatment is based on exercise supplemented by symptomatic treatment of the primary cause. 2. Bony tilt. Refers to the children do have bony long and short legs exist, lower limbs are not equal length. Generally, ICB orthopedic insoles are used for correction, and corrective exercises for standing and sitting postures are carried out to correct the mobility inconvenience caused by short and long legs. If the condition is serious and progressing, it is recommended to seek medical attention to avoid delays.