The lumbar pool drainage surgery is a very common clinical treatment option, which has certain benefits but also certain drawbacks. 1, in the process of placing the lumbar pool, there is a risk of damage to the surrounding nerves and the emergence of intra-spinal hematoma, so after the lumbar pool drainage, we must strictly carry out the corresponding observation, pay attention to the changes in the patient’s lumbar condition, and if there is severe pain in the lumbar region and numbness in the lower limbs, we must promptly carry out the corresponding testing to clarify the progress of the patient’s condition and provide early treatment. The patient may be at risk of infection, because after all, the lumbar pool needs to be left in place for at least 7 days, and if bacteria enter the subspinal membrane from this line, it is easy to cause retrograde intracranial infection, so attention must be paid to sterilization and aseptic operation. 3, Excessive drainage, if the height of the drainage bottle is not grasped, it is easy to over-drain the cerebrospinal fluid, causing hypocranial pressure headache and other symptoms, so this point must also be noted.