Sore buttocks may be caused by physiological factors such as excessive exercise, or by pathological factors such as sacral fracture, lumbar disc herniation and femoral head necrosis. 1. Physiological factors: if the patient is engaged in strenuous sports such as horseback riding, the hip muscles are subjected to intense vibration fatigue, excessive production of physical metabolism products, lactic acid accumulation in the buttocks, which will cause the symptoms of buttock soreness, without special treatment, adequate rest can be gradually relieved. 2. Sacral fracture: due to fall, fall and other traumatic injuries can cause sacral fracture, mild sacral fracture standing or walking clinical symptoms are relatively light, when the patient bends or sits down, there can be symptoms of buttock pain, accompanied by sacrococcygeal pressure pain. 3. Herniated lumbar intervertebral disc: The herniated lumbar intervertebral disc compresses the nerve root, which can also cause pain in the lumbar region and buttocks, usually accompanied by numbness around the lumbar region, as well as radiating pain and numbness in the lower limbs. 4. Necrosis of the femoral head: If the femoral head has ischemic necrosis, it is easy to cause structural changes of the femoral head, and even collapse of the femoral head, which is manifested as pain around the hip, aggravated by activities, and in severe cases, accompanied by limitation of hip joint activities. Causes of hip pain are more reasons, may also be related to muscle strain, fasciitis and other reasons, if the symptoms continue without relief, it is recommended to go to the hospital in time to identify the cause of the disease, and then targeted treatment.