Lumbar puncture can cause nerve disorders if the nerves are accidentally injured, but lumbar puncture is a routine neurological operation and does not usually cause damage to the nerves. After disinfecting the skin and laying a towel, a puncture needle is inserted into the spinal canal along the intervertebral space to reach the subarachnoid space, and cerebrospinal fluid is extracted for laboratory tests or anesthesia. Due to the surrounding cauda equina nerve and nerve roots innervating the lower limbs, if the operation is not performed properly and the needle is too deep and mistakenly injures the nerves, the patient may experience lower limb pain, numbness, urinary incontinence, urinary retention and other neurological disorders. Lumbar puncture is a routine clinical operation technique, if the clinical operation is done properly, it will not cause damage to the nerves, and patients are advised to relax.