Laparoscopic radical surgery for gastric cancer was first reported by Kitano et al. in Japan in 1994. Because of its minimally invasive advantages such as light postoperative pain, fast recovery, short hospital stay and low complication rate, laparoscopic surgery for gastric cancer has been gradually carried out at home and abroad, achieving good recent and long-term curative effects and maturing in technology, and is gradually accepted by patients. Laparoscopic radical surgery for gastric cancer has the following advantages over traditional open surgery: (1) less trauma, faster postoperative recovery and aesthetic appearance; (2) less impact on patient’s immune function; (3) the good coagulation effect of ultrasonic knife can reduce the shedding of tumor cells from lymphatic vessels during lymph node dissection. (1) Complete laparoscopic gastric surgery: the resection and anastomosis of the stomach are done under laparoscopy, which is a high technical requirement, and the abdominal incision is very small. (3) Hand-assisted laparoscopic gastric surgery: during the laparoscopic operation, the hand is inserted into the abdominal cavity through a small incision in the abdominal wall to assist in the operation. (1) Laparoscopic distal radical gastric cancer surgery; (2) Laparoscopic proximal radical gastric cancer surgery; (3) Laparoscopic radical total gastrectomy for gastric cancer; (4) Laparoscopic gastrectomy combined with adjacent organ resection. What are the advantages of complete laparoscopy compared with laparoscopic assisted radical gastric cancer surgery? Compared with complete laparoscopic radical gastric cancer surgery, laparoscopic-assisted radical gastric cancer surgery completes extra-abdominal anastomosis through a small adjuvant incision, which may produce stronger tension and damage to the tissues around the anastomosis due to the limited view (especially in obese patients). In contrast, during fully laparoscopic surgery, the entire anastomosis process can be clearly observed, avoiding unnecessary operative damage.