There is no authoritative basis to state how long patients with gastric cancer can live, generally the 5-year survival rate of gastric cancer patients is in the range of 10% to 90%. The life expectancy of stomach cancer patients can not be generalized. Stomach cancer is caused by the long-term combined effect of many factors on each other, and patients will have symptoms such as epigastric fullness, weight loss and anemia. The survival rate of stomach cancer patients needs to be judged according to five-year survival rate. Stage I stomach cancer patients have a five-year survival rate of more than 90%, Stage II stomach cancer patients have a five-year survival rate of 70%, Stage III stomach cancer patients have a five-year survival rate of 25%~60%, and Stage IV stomach cancer patients have a five-year survival rate of less than 10%. The prognosis of early gastric cancer patients is good after timely treatment, while the prognosis of patients with advanced gastric cancer is poor. There is no clinical information about the life expectancy of gastric cancer patients, but they should seek medical treatment as early as possible. Gastric cancer patients should follow the doctor’s instructions to have regular checkups and closely monitor their condition.