The risks of minimally invasive surgery for lumbar spinal stenosis are still very high, mainly in the following aspects: 1. The process of surgery may damage the large blood vessels, leading to hemorrhage and, in severe cases, hemorrhagic shock. 2. 3.The procedure may lead to anesthesia accident, allergy or cardiac arrest. 4.Postoperative infection or thrombosis may occur, and severe pulmonary embolism may endanger the patient’s life.