After surgery for lumbar disc herniation, if the patient still has pain symptoms, it is mostly related to the following factors: 1. After surgery for lumbar disc herniation, the patient still has radiating pain and numbness in the lower limbs, or even an aggravating trend, and it is necessary to consider whether it is caused by the surgery not achieving sufficient decompression, i.e., the scope and degree of decompression are not enough; 2. After surgery, there is a recurrence, producing similar symptoms as before surgery. In this case, an exploration should be performed to determine whether the decompression is complete and whether the nerve root is completely released; 3. Due to the long-term compression of the nerve, inflammatory changes occur in the nerve and the pain can last for a period of time. However, usually the inflammatory changes of the nerve can gradually improve over time, and the pain gradually decreases until it disappears. Therefore, patients with postoperative pain need to be judged according to different symptoms and signs. If the pain is only mild, the patient does not need to worry and the nerve inflammation can usually gradually subside over time.