The five-year survival rate of gastric cancer is about 10% after the spread of cancer cells in the advanced stage of the disease is treated. Gastric cancer is a malignant tumor of digestive system caused by Helicobacter pylori infection, heredity and other factors, and the development of the disease to the late stage is often accompanied by the spread of cancer cells leading to distant metastasis, such as liver metastasis, lung metastasis, abdominal implantation metastasis and so on. In this period, it is mainly treated by non-surgical therapies such as radiotherapy, chemotherapy and targeted therapy. After active treatment, the five-year survival rate of advanced gastric cancer is about 10%. However, the purpose of treatment in this period is to prolong the survival time and improve the quality of life, and the survival time will be prolonged if the patients are more tolerant to the treatment.