Lumbar foramenoscopy after half a year after the waist and legs start to hurt again is mostly considered to be lumbar disc herniation recurrence and nerve adhesion and other phenomena, can be treated by drugs and surgery and other ways. 1. Recurrence of lumbar disc herniation: lumbar foramenoscopy is a minimally invasive treatment for lumbar disc herniation, in which the part of the disc that oppresses the nerves and blood vessels after bulging is partially excised or ablated through minimally invasive foramenoscopy, so as to achieve the purpose of treating lumbar disc herniation, but it does not excise the protruding lumbar disc as a whole. After a period of time, the lumbar disc may herniate again and cause back and leg pain, which may require another surgery. 2. Nerve adhesion: Adhesion between the dura mater of the resected disc and the nerve root may occur after the operation, which may also lead to low back and leg pain, and can be treated with oral nutritional nerve drugs such as methylcobalamin, and surgery can be considered to loosen and separate the adherent nerves under the premise of meeting the surgical indications. Patients should go to regular hospitals for examination to confirm the real cause of the phenomenon before giving targeted treatment.