Surgery of the lumbosacral spinal canal is an important part of neurospinal surgery and is indicated for a variety of conditions, such as: spinal cord tethering, sacral cysts, tumors within the lumbosacral spinal canal, and vascular malformations of the lumbosacral segment. Cerebrospinal fluid leakage is the most common and serious postoperative complication of lumbosacral intraspinal surgery, which is caused by the thin dura mater of the lumbosacral segment, high cerebrospinal fluid pressure, and thin muscle layer, among other characteristics. Cerebrospinal fluid leakage may lead to serious consequences such as non-healing wounds and intracranial infections, which are quite tricky to treat, so prevention of cerebrospinal fluid in lumbosacral spinal canal surgery is very important. In addition to the management of drainage and observation of the wound during hospitalization by the medical staff, the patient himself and his family should also pay attention to: 1. The choice of body position. The prone position should be maintained for more than 2 weeks after surgery, and if tolerated, the head-low-foot-high position can be chosen. During the period, you can turn slightly on your side, with the angle between your body and the bed less than 45°. If you need to change the position, pay attention to gentle movements to prevent pulling the wound. Try to keep the head below the wound position or at the same level with the wound. 2. Take 1kg salt bag to compress the wound and close the cavity in the operation area. During the hospitalization, if fluid is found to be oozing from the wound, promptly report to the medical staff. 3.The timing of going down. If there is not much postoperative drainage and the wound is healing well, you can get off the ground after 2 weeks after surgery; if there is much postoperative drainage and the drainage tube is placed for a long time, you should get off the ground 2 weeks after the drainage tube is removed. 4.Post-discharge attention: lie flat within 1 month after surgery, do not spend too much time on the ground, reduce or avoid squatting and sitting to prevent excessive wound tension and dural sac splitting leading to cerebrospinal fluid leakage. Do not do strenuous activities and avoid heavy physical labor within 3 months after surgery. 5, pay attention to the wound condition, if there is wound redness, swelling, oozing, promptly consult the doctor.