Lumbar anesthesia is generally lumbar anesthesia, which medically refers to a type of intraspinal anesthesia. Lumbar anesthesia produces a certain amount of pain, but the pain is usually not significant and can be tolerated. Lumbar anesthesia is a method of anesthesia in which anesthetics are injected into the subarachnoid space by means of lumbar puncture, mainly in preparation for surgery of the lower abdomen and lower limbs. The local skin and subcutaneous tissues will be stimulated during the injection of anesthetic, so some pain will be produced, and soreness and swelling may also occur. However, as local anesthetic is injected prior to lumbar anesthesia to numb the local tissues, skin and fascia, the pain produced during lumbar anesthesia is not obvious and is generally tolerable. Before the lumbar anesthesia, it is necessary to make good preparations, such as local skin cleaning, to ensure aseptic operation, so as to avoid secondary infection. In addition, it is forbidden to eat for 12 hours before anesthesia to avoid abnormalities during anesthesia. If the pain after lumbar anesthesia is more obvious or lasts for a long time, you need to consult your doctor to clarify the cause.