The pain in the hip is usually not too related to the femoral head, which has lesions causing pain mostly in the groin. The common causes of pain in the buttocks may be hip muscle strain, strain injury, sacroiliac arthritis, or even severe ankylosing spondylitis, severe perianal abscess, and nerve compression caused by lumbar disc herniation, etc. However, the pain caused by different diseases have their own characteristics, for example, most of the pain caused by perianal abscess is close to the bottom tail, with obvious redness, swelling, heat and pain. The pain caused by a herniated lumbar disc can be radiated to the lower extremities in addition to the buttocks; the pain caused by ankylosing spondylitis is mainly stiffness and restricted movement in the morning, and is mostly seen in young and middle-aged men; the pain caused by muscle strain and strain is typically relieved by bed rest and hot compresses.