The reason why your legs are getting more and more painful after the lumbar disc herniation surgery may be that the nerves have not fully recovered, nerve root edema, nerve degeneration or bleeding at the surgery site. 1. Nerve not fully recovered: because of the heavier lumbar disc herniation, the compressed nerve is not fully recovered after the surgery, and the pain relief is not obvious. 2. Nerve root edema: the lumbar disc herniation surgery may stimulate the nerve root, making the nerve root edema aggravate the leg pain, which will be gradually reduced in a week or so. 3. Nerve degeneration: because of the long time of compression of the nerve by the herniated lumbar disc, the compressed nerve is degenerated, and the degenerated nerve is not recovered after the surgery, and the pain can not be relieved. 4. Bleeding at the operation site: hematoma occurs when bleeding occurs at the operation site, and the hematoma will compress the nerve root and cause pain, generally with the absorption of hematoma, the pain will gradually recover. There may be other reasons for the increasing pain in the legs after lumbar disc herniation surgery, so you should go to the regular hospital in time, and the doctor will judge the specific reasons according to the symptoms, signs and auxiliary examinations, and give the correct treatment for the reasons.