The average life expectancy after gastric cancer surgery is 61.6 years according to the statistics. The length of life after gastric cancer surgery is fundamentally related to the patient’s early or late consultation time, but also has a strong connection with the degree of tumor malignancy and differentiation. For patients with the same period or similar developmental disease, the fundamental factor that really determines the length of life is the degree of tumor differentiation and malignancy. If the tumor is more malignant, the youngest gastric cancer patient is in his 20s, the younger the patient, the higher the malignancy, the faster the cell proliferation and development, while the older the patient, the slower the development, which mainly lies in the degree of differentiation of gastric cancer, the course of early stage patients is not very long, 2-3 months after consultation, if the tumor is undifferentiated, it often has already infiltrated the stomach wall or has metastasis of surrounding lymph nodes, in this case, even if the surgery is done well, the prognosis is not too good. In this case, even if the surgery is done well, the prognosis will not be too good. Therefore, the key to life expectancy after gastric cancer surgery is early gastric cancer screening, and patients should go to the hospital in time after having uncomfortable symptoms, and should not take it lightly, thinking that taking drugs to help digestion and cure appetite will be better in two days. There are two kinds of gastric cancer: early stage gastric cancer and progressive stage gastric cancer, as follows: 1. Early stage gastric cancer has low lymph node metastasis rate due to early intervention, and statistics show that the 5-year survival rate is over 95%; 2. 5-year survival rate of progressive stage gastric cancer varies with differentiation degree and different conditions, and statistics show that the survival rate is only 5%-40%, and the early or late time of consultation determines the rate of lymph node removal after surgery, and if it can If the resection area is larger than the lymphatic metastasis, it is the most ideal surgical plan. The later the diagnosis, the lower the ideal level, so the shorter the life expectancy. Nowadays, surgery for gastric cancer is the main treatment method.