Patients with lumbar disc herniation who undergo surgery may have postoperative complications, such as nerve root or spinal cord injury, spinal cord compression, cerebrospinal fluid leakage, poor incision healing, and lower limb weakness, as follows: 1. Nerve root or spinal cord injury: Patients undergo open surgery, which may cause nerve root and spinal cord injury. 2. Spinal cord compression: Inadequate intraoperative hemostasis may cause patients to have spinal canal Intraoperative hemorrhage, which may lead to hematoma in the spinal canal after surgery, will cause spinal cord compression. 3. Cerebrospinal fluid leakage: If the dura is damaged during surgery, it will cause leakage of cerebrospinal fluid from the patient’s lower back after surgery. 4. Poor incision healing: If the aseptic operation is not strict during surgery, it will cause infection in the patient’s lower back after surgery and poor healing of the surgical incision. 5. Weakness of the lower limbs: Patients who have undergone intraoperative injury to the nerve roots or The spinal cord will cause weakness of the lower limbs and aggravation of the pain symptoms of the lower limbs.