Lumbar bulging discs cause leg pain, mainly because of the bulging nucleus pulposus, compression of the sciatic nerve and cause pain in the innervated area. Commonly used drugs include diclofenac sodium enteric capsule, methylcobalamin, and chlorzoxazone tablets. In severe cases, mannitol and dexamethasone can also be used. 1. Diclofenac sodium enteric capsule: can inhibit the inflammatory reaction of the nerve root, play the role of pain relief, acute active ulcers or bleeding patients are contraindicated. 2. Methylcobalamin: it can improve the nutritional supply of peripheral nerves and improve the symptoms. 3. Chlorzoxazone tablets: can relieve muscle spasm, and reduce nerve compression, common adverse reactions are gastrointestinal, gastrointestinal reactions. 4. Dexamethasone: mainly used to reduce edema produced by nerve root compression, prohibited in acute peptic ulcer, can not be used for a long time, long-term use of drugs can lead to osteoporosis. 5. Mannitol: mainly used to reduce the pressure in the vertebral canal, and reduce the compression, the use of drugs for too long can cause renal failure. The above drugs should be used in accordance with medical advice, do not use drugs without authorization, so as to avoid adverse consequences.