Sacroiliac joint pain is considered to be related to trauma, ankylosing spondylitis and other causes, and can be treated with general treatment, physical therapy, medication and surgery according to the cause. 1. Trauma: Sacroiliac joint pain will occur after direct or indirect violence injury, such as ligament injury or fracture. After the injury, attention should be paid to rest, and cold compresses can be applied to the affected area. At the same time, non-steroidal anti-inflammatory and analgesic drugs, such as diclofenac sodium, can be applied to relieve pain. If there is a serious fracture, surgical incision and fixation is also needed. 2. Ankylosing spondylitis: it is a chronic inflammatory disease that mainly involves the spine and sacroiliac joints, and can also cause sacroiliac joint pain. Normally, we should pay attention to develop a good lifestyle, and can also apply diclofenac sodium, methotrexate and other treatments. In the later stage, if there is serious deformation of the spine, etc., surgical treatment is needed, such as orthopedic spine surgery. When sacroiliac joint pain occurs, it is recommended to go to the hospital to further identify the cause of the disease, and then targeted treatment. The above drugs need to be applied under the guidance of a physician.