Blood in stool is more serious in stomach cancer, which may be caused by stomach cancer breaking and eroding blood vessels in the stomach. It is suggested that patients should go to hospital for treatment in time, so as to avoid excessive blood loss and jeopardizing life. 1. Gastric cancer ulceration: generally due to the surface ulceration of gastric cancer, which causes blood vessels to rupture and bleed, thus leading to blood in stool, accompanied by vomiting blood or gastrointestinal hemorrhage, and in serious cases, hemorrhagic shock, which is a more serious symptom. It is recommended to go to the hospital in time to stop bleeding and treatment. 2. Erosion of blood vessels in the stomach: generally due to the erosion of tumor tissues into the blood vessels in the stomach, which may lead to shock in serious cases. It is suggested that the patient should be treated with hemostatic therapy, such as oral hemagglutinin, octreotide and other medications under the guidance of doctor, if the effect is not obvious, the patient should go to the hospital to take surgical treatment in time. In addition, avoid spicy, cold and other stimulating food, eat more light, easy to digest food. In addition, you should pay attention to rest, avoid overwork, maintain an optimistic mood, actively cooperate with the doctor’s treatment, try to control the development of the disease, you should follow the doctor’s instructions to go to the hospital regularly for follow-up.