Gastric adenocarcinoma accounts for about 95% of all gastric cancer patients. How long a patient can live after advanced surgical treatment is not generalized, it is related to the differentiation degree, whether there are distant metastases, and the treatment method, etc. Clinically, the “5-year survival rate” is used to assess the survival of patients. Clinically, “5-year survival rate” is used to assess the survival of patients with tumors. The 5-year survival rate of advanced gastric adenocarcinoma is about 7%~34%. Generally speaking, the lower the differentiation degree of gastric adenocarcinoma, the more serious the disease is and the more serious the disease is when combined with distant metastasis, such as lymph node metastasis, lung metastasis, liver metastasis and so on. For advanced gastric adenocarcinoma treated with radical surgery, after removing most of the stomach and carrying out lymph node dissection, the survival rate of patients may be prolonged, and if chemotherapy or radiotherapy is carried out under the guidance of doctors, as well as the improvement of one’s own physical fitness, the postoperative prognosis of patients may be further improved and the survival rate prolonged. If the patient’s condition is so severe that he or she loses the opportunity for surgical resection of the large part of the stomach and can only undergo palliative surgery or even inoperable treatment, the survival time is often less than 1 year. It should be noted that postoperative patients still need to actively cooperate with their doctors, undergo regular review, and improve their psychological quality, all of which play a general role in improving survival.