The traditional open surgery for gastric cancer takes about 2-4 hours, and the time cannot be fully determined, depending on the extent of the lesion, the difficulty of the surgery, as well as the way of surgery and the experience of the surgeon. If lymph node dissection is performed, the time is relatively longer, taking about 2-4 hours. Laparoscopic radical gastric cancer surgery is a new type of surgery, which takes about the same time as traditional surgery, 2-3 hours, and relatively shorter for more skilled surgeons.