The survival time of advanced cancer patients who vomit blood is about one week to one month. The cause of vomiting blood in advanced cancer may be gastrointestinal bleeding, hemoptysis and pulmonary embolism caused by lung cancer can cause bleeding. If patients with advanced cancer vomit blood, it means that the disease has progressed and the condition has worsened, and they need to apply hemostatic drugs, such as posterior pituitary hormone, octreotide, hemagglutinin, and phenolsulfonamide, etc. for symptomatic treatment. If these conditions are effectively relieved after the application of hemostatic drugs, the patient’s survival time will not be affected. If there is still a large amount of bleeding, it will lead to shock and seriously endanger the patient’s life. Therefore, the survival time of patients with advanced cancer who have vomited blood is related to the amount of bleeding and the efficacy of the drugs used, and if necessary, blood transfusion therapy is needed to improve the patient’s symptoms.