Surgery for lumbar spinal stenosis is based on traditional open surgery, i.e. incision of the spinal canal for decompression followed by internal fixation, with better surgical results. However, with the advancement of minimally invasive surgery, if the stenosis meets the minimally invasive indications in terms of imaging and symptoms, minimally invasive surgery can achieve the corresponding therapeutic effect. If the stenosis is purely dominated by disc herniation and ligamentous soft tissue thickening, the corresponding decompression can be performed. If the stenosis is dominated by osteophytes and coalescence, minimally invasive results are less effective. The incision of traditional surgery is larger, and the relative minimally invasive surgery incision is smaller. In addition, under the microscope, because of a certain magnification, it will be observed more clearly than the naked eye, and in addition, the patient can get out of bed early after surgery, and the postoperative recovery is relatively fast.