Survival rate of mid-term gastric cancer after surgery, according to the evaluation of the Japanese Cancer Research Society, the 5-year survival rate of mid-term gastric cancer is about 51%-68%, but its specific survival time is also closely related to gender, age, preoperative course, gastric cancer stage, tumor site, tumor size, infiltration depth and pathological stage. Patients over 60 years old have lower malignancy and better prognosis, while patients under 30 years old have higher malignancy and worse prognosis. Among the pathological types, if analyzed by histological type, ulcerated carcinoma has the best prognosis, differentiated adenocarcinoma and low-differentiated adenocarcinoma have the second best prognosis, and mucinous carcinoma has the worst prognosis.