Sacroiliac osteoarthritis mostly refers to sacroiliac arthritis, and the treatments for sacroiliac arthritis include general treatment, drug treatment and surgery. 1. General treatment: after sacroiliac arthritis, you need to correct the bad posture in your life, quit smoking and drinking, pay attention to keep warm and avoid sitting for a long time. Appropriate exercise can be done to enhance muscle strength and increase joint stability, and hot compresses can be applied to the muscles of the waist and buttocks to promote blood circulation and reduce the inflammatory reaction of the sacroiliac joints. 2. Medication: If the pain in the waist and hip area is more obvious, you can take non-steroidal anti-inflammatory drugs, such as aceticlofenac extended-release tablets, celecoxib and other anti-inflammatory pain, and you can use muscle relaxation drugs, such as tizanidine to relieve muscle spasms. 3. Surgery: If conservative treatment has no obvious effect, and the symptoms of pain and stiffness in the lower back and buttocks have seriously affected daily life, surgical treatment can be considered, and sacroiliac joint fusion can be performed. If the symptoms such as pain and stiffness in the lower back and buttocks persist without relief, it is recommended to consult a doctor in time and follow the doctor’s instructions.