The main difference between sacroiliitis and lumbar intervertebral disc herniation is the difference in clinical symptoms, etiology, examination methods and treatments. null1.Lumbar intervertebral disc herniation, lumbar onset caused by trauma, strain injury. Feeling pain in the lumbar region, radiating pain in the lower limbs, numbness in the lower limbs, weakening of muscle strength, affecting the normal walking of the lower limbs. On examination, there was positive lumbar pressure pain, positive percussion pain, and positive straight leg raising test. By taking CT film of lumbar spine area, the diagnosis can be clear. 2. Sacroiliac arthritis, belonging to aseptic inflammation, the patient feels obvious pain in the sacroiliac joint. Local pressure pain is positive, pelvic compression separation test is positive, affecting the normal activities of the pelvis, need to shoot the sacroiliac joint area CT film, MRI film, can be a clear diagnosis. null3. lumbar intervertebral disc disease treatment is mainly drug treatment, you can take celecoxib and methylcobalamin tablets and so on. You can massage and traction and other treatments, if the effect of conservative treatment is not good, you can surgery. 4. Sacroiliac arthritis, such as mild symptoms, short duration of the disease, patients can use drug therapy, local anti-inflammatory pain, oral non-steroidal anti-inflammatory drugs such as celecoxib capsules and ibuprofen and so on. If the effect is not obvious, closed therapy can be carried out, injecting anti-inflammatory and analgesic drugs such as prednisolone into the sacroiliac joint. If the condition is serious, minimally invasive sacroiliac joint fusion can be used. In normal life, we should pay attention to a balanced diet, more fitness, avoid sedentary, if there is any discomfort, it is recommended to go to the hospital in time.