Laparoscopic radical surgery for gastric cancer: laparoscopic radical surgery for gastric cancer has a small incision, so the cosmetic effect is good; the magnifying effect of laparoscopy can finely display the anatomical level structures such as small vasculature, nerves and fascia, so there is less blood loss; laparoscopic surgery uses body position and gravity to expose the operation field, which is less invasive and less damaging to tissues, so the postoperative intestinal function recovers quickly and there are fewer complications; in addition, its long-term efficacy and tumor safety are similar to or even better than those of open surgery. In addition, its long-term efficacy and tumor safety are similar to or even better than those of open surgery. For progressive gastric cancer, laparoscopic minimally invasive surgery needs to be standardized because laparoscopic surgery makes the level clear and the field of view enlarged, so it is easier to dissect according to the gap and avoid side injuries, and laparoscopic operation is easier to free deep parts, so laparoscopic radical gastric cancer surgery is easier to meet the standard requirements. Laparoscopic gastric cancer standardization requires full understanding of the complex anatomy of Weizhou, clear identification of anatomical pathways as well as anatomical levels, skillful microscopic separation, hemostatic operation techniques, and requires microscopic sub-regional operation to thoroughly clear the lymph nodes. Some people think that laparoscopic surgery is difficult in obese patients, but it is not. Laparoscopic surgery can reveal the anatomical gap more clearly and lymph node clearance is more delicate than open surgery; laparoscopy can reveal the operative field in multiple angles, high brightness and high definition, especially for operations with narrow space and deep location, such as freeing the gastric fundus and lower esophagus; based on the characteristics of obese patients in the north, laparoscopic local field enlargement is more conducive to finding anatomical gap.