Abstract: Digestive tract reconstruction is one of the key operations of gastric cancer surgery. Its quality directly affects the occurrence of postoperative complications and long-term nutritional status and quality of life. Reasonable selection of digestive tract reconstruction in totally laparoscopic radical gastrectomy for gastric cancer can significantly reduce postoperative complications and improve postoperative nutritional status and quality of life. This paper discusses the advantages and disadvantages of digestive tract anastomosis used in total laparoscopic distal gastrectomy and total gastrectomy, explores the best possible anastomosis at present, describes the progress of anastomosis in complete laparoscopic proximal gastrectomy, and introduces the progress of physiology and biomechanical reconstruction theory.