Gastric malignant tumor is one of the very common diseases in clinic. Generally speaking, if patients with advanced gastric cancer develop blood in stool, their survival time is about 3-6 months, and those with serious condition may pass away in about 1 week. Because the appearance of blood in stool in patients with advanced gastric cancer often suggests that tumor cells have invaded blood vessels in the muscular layer of gastric wall, which will cause the rupture of blood vessel wall causing acute or chronic gastrointestinal blood loss manifestation. Patients may have the symptoms of hemorrhagic shock or anemia. If patients’ tumor cells invade small arteries, bleeding is often uncontrollable despite active treatments such as blood transfusion and fluid rehydration, and this kind of patients may pass away due to excessive blood loss in about 1 week. If the tumor invades the small venous vessels, it is possible to cause the manifestation of chronic blood loss, in this case, the patient can be given intermittent transfusion of red blood cells, plasma, and at the same time replenishment of energy, the patient is likely to maintain the time of 3-6 months.