With a herniated lumbar disc compressing a nerve, the clinical symptoms associated with low back pain can be treated with a closed injection, which has two effects: first, it can relieve the pain in the area during the closed injection treatment, and at the same time reduce the muscle tension and relieve the herniated lumbar disc compressing a nerve. Second, it can also play a role in helping the diagnosis, some multiple segments of the lumbar disc herniation, there is no way to clearly determine which is the main cause of the current symptoms, can be in the process of closed injection treatment, observe the entire symptom changes, clear the entire lumbar disc herniation of the specific segments, for the subsequent focus on the treatment of this part of the lesion place to provide strong evidence, the treatment effect will be very good.