Butt pain can be caused by overuse, acute injury, herniated lumbar discs, pyriformis syndrome, and other factors. 1. Excessive exercise: Excessive exercise time, resulting in excessive accumulation of lactic acid metabolites in the gluteal muscles, will cause pain in the buttocks, manifested as soreness, which is a normal physiological phenomenon, and can be relieved by itself after reasonable rest. 2. Acute injury: such as acute strains or external blows, resulting in damage to the soft tissues of the buttocks, will cause pain in the buttocks, may also be accompanied by swelling, subcutaneous bruising and other symptoms. 3. Lumbar disc herniation: when the lumbar disc herniation causes continuous pressure on the nerves innervating the lower limbs, it will cause buttock pain, accompanied by lumbar pain, lower limb radiating pain and other symptoms. 4. Piriformis syndrome: it may be related to chronic strain injury, acute injury and other factors, which can lead to sciatic nerve compression, which will cause buttock pain, may be accompanied by radiating pain in the lower limbs, and in severe cases, it will lead to atrophy of buttock and calf muscles. Buttock pain for a longer period of time, and accompanied by other obvious abnormal symptoms, should also seek medical treatment for a detailed examination, to clarify the cause of the disease after timely treatment, to avoid aggravation of the lesion.