One leg long and one leg short, can be corrected by the following methods: 1, if the patient is lumbar scoliosis, or pelvic lateral tilt caused by one leg long and one leg short, resulting in double lower limb asymmetry, should treat lumbar spine and pelvic disease, through muscle exercise to restore the physiological curvature of the lumbar spine, as well as pelvic lateral tilt, can correct the double lower limb asymmetry. 2, if congenital hip dislocation, hip dysplasia caused by double lower extremity unequal length, should be considered through surgical treatment to correct, generally using artificial total hip replacement surgery to recreate the acetabulum, restore the symmetry of the double lower extremities. After the above methods of treatment, the asymmetry of both lower limbs will be completely corrected, and the patient should also cooperate with the muscle exercise of both lower limbs to avoid the recurrence of symptoms.