This is common for the following reasons: 1, if the surgery time is too long, will cause the lumbar muscles continue to be in a state of stretching, spasm, there will be pain, you can local massage or hot compress. If time and economy allow, you can do local physiotherapy or Chinese herbal compresses and acupuncture and other treatments to help relieve symptoms; 2, lumbar spine disease, some patients have previous lumbar spine hyperplasia or disc herniation, people lying flat for a long time will make the lumbar spine pain, which generally with the extension of time symptoms can gradually subside; 4, the surgical bed is generally hard, back pressure for a longer period of time will also appear pain; 5, if the lumbar numbness Generally, it is pain at the lumbar puncture point, most of the pain can gradually subside, and if necessary, local hot compresses can be applied. In short, if lumbar pain persists, timely consultation and communication with the attending surgeon is required.