How long can one survive chemotherapy for advanced gastric cancer needs to be judged according to physical condition, sensitivity to drugs and treatment effect, and the 5-year survival rate of stage III is about 40%, and that of stage IV is about 6%. The survival time of advanced gastric cancer needs to be judged according to physical condition, sensitivity to chemotherapy drugs, patient’s physical condition and treatment effect. If the patient is sensitive to chemotherapy drugs, the patient’s physical condition is better, the treatment effect is better, the survival time will be relatively longer, and the 5-year survival rate is about 40% for stage III and 6% for stage IV. If the patient is not sensitive to chemotherapy drugs, the patient’s physical condition is poor, the treatment effect is poor, and the survival time will be shorter. Therefore, the survival period after chemotherapy for advanced stomach cancer cannot be generalized, which can only be judged according to the treatment effect. Patients should keep optimistic mood and don’t worry too much. In terms of diet, they should eat more protein and vitamin-rich food, such as beef, apple and so on.