Big buttocks on one side and small buttocks on the other side may be caused by sitting posture, congenital hip dislocation and gluteal myoclonus, which can be treated by flat jogging, surgery and massage. 1. Sitting posture: If it is found to be caused by long time sitting posture after consultation, it is necessary to stop the bad posture, and can be corrected by flat jogging exercise in daily life. 2. Congenital hip dislocation: these patients should go to the orthopedic department as soon as possible, to make it clear that the patients have congenital hip dislocation, and to treat this condition as soon as possible, they need to go to regular hospitals for surgical treatments, such as reconstruction of the acetabulum, reset of the hip joint and other surgeries. 3. Contracture of hip muscle: after checking the patients with contracture of hip muscle, patients with mild symptoms can be treated with massage or acupressure, while patients with severe symptoms need to cut off the contracted muscles and perform functional exercises after the operation. After the appearance of one side of the buttock big, one side of the buttock small situation, do not private massage or treatment, so as not to cause adverse consequences, miss the best time for treatment.