Minimally invasive lumbar spinal stenosis surgery is relatively mature, so the risks of the surgery are relatively small, but it can lead to some complications. Minimally invasive surgery for lumbar spinal stenosis is performed because of the minimally invasive access used. Therefore, the trauma, injury, and blow to the patient are relatively small, so if the doctor is skillful, the risk of the surgery is not great. Although the risk is relatively small in theory, there is a certain chance that it can lead to certain complications. The main complications are damage to blood vessels during surgery (which can lead to heavy bleeding), damage to nerves during surgery (which can cause numbness on the affected side), and wound infection. Therefore, all surgeries carry certain risks, which can be minimized with perfect and thorough examination and active cooperation.