Lumbar disc herniation after the closed injection to maintain the length of time is related to the patient’s sensitivity to the drug, some patients may be a long time will not be repeated, some patients can be maintained for about 14 to 21 days. Lumbar disc herniation with closed injection, that is, a kind of lumbar intervertebral nerve block therapy, is to puncture the injection needle into the lumbar paraspinal space, the lumbar spinal nerve root for local paralysis, if the closed injection using a long-acting local anesthetic, the patient can last for 14 to 21 days without back pain, leg pain and other symptoms. Patients who are sensitive to the effects of the drug are able to achieve prolonged relief through 2 to 3 times of closed treatment. If the diagnosis of lumbar disc herniation is confirmed, early and standardized treatment is recommended to reduce the adverse effects of the disease. All of the above medications should be used under the guidance of a doctor, avoid self-medication.