The death process of gastric cancer in late stage is generally divided into two situations: 1. The disease of gastric cancer gradually progresses, the tumor consumes the energy of the body, the patient presents extreme nutritional deficiency, i.e., the state of cachexia, and finally combined with the decline in the function of various organs to coma, heartbeat, respiratory arrest, failure and death. 2. The patient suddenly develops life-threatening complications during the course of gastric cancer, and dies suddenly due to ineffective rescue, such as the patient’s cancer embolus dislodged, causing pulmonary embolism, the patient Sudden respiratory distress, cyanosis, progressive decrease of oxygen saturation, followed by loss of consciousness, respiratory arrest, cardiac arrest and clinical death. Another example is that the patient’s gastric cancer lesion erodes the large blood vessels in the stomach and suddenly appears a large amount of gastric bleeding, manifested as a large amount of vomiting blood, pale face, blood pressure drops, respiratory and cardiac arrest, loss of consciousness and then clinical death. In short, the death process of gastric cancer is one kind of chronic death by failure and the other kind of sudden death.