Abstract: Radical operation is very essential for gastric cancer, and the reasonable digestive tract reconstruction is an important part affecting the prognosis and quality of life of patients. After gastrectomy, the most basic requirements for reconstruction include prevention of gastrointestinal fluid reflux, keeping food storage and emptying function, physiological pathways and endoscopic inspection of biliary tract, pancreas and gastric remnant. In addition, technical level of reconstruction, safe operation, low invasion and suture technique cannot be ignored. Since complex digestive tract reconstruction can cause many complications, the method in the research stage should be carefully chosen.