Laparoscopic total gastrectomy is generally a laparoscopic radical gastric cancer surgery, which mainly includes laparoscopic total gastrectomy, laparoscopic-assisted total gastrectomy and hand-assisted laparoscopic total gastrectomy. 1. Laparoscopic total gastrectomy is a type of surgery with high technical requirements and relatively long operation time. Both the process of removing the stomach and the gastrointestinal anastomosis need to be done laparoscopically. 2. Laparoscopic-assisted total gastrectomy is the most commonly used laparoscopic surgical method for radical gastric cancer surgery. Through laparoscopy, the stomach is freed and lymphatic dissection is performed, and the stomach is resected or anastomosed through an auxiliary small incision. 3. Hand-assisted laparoscopic total gastrectomy requires the hand to be inserted into the abdominal cavity through a small auxiliary incision to assist in the operation and complete the surgery during laparoscopic surgery.