Spitting blood in patients with cerebral infarction may be caused by a kind of stress peptic ulcer caused by cerebral infarction itself, and most of them are caused by thalamic footholds or large cerebral infarction. Patients with thalamic infarction mainly manifest sensory perception disorder, which may appear numbness, wood, pain, and may also appear mood or appetite disorder; some patients may develop peptic ulcer, which causes gastrointestinal bleeding, and patients may manifest vomiting blood or blood in stool. In case of patients with large cerebral infarction, accompanied by consciousness disorder, coma may occur, or de-corticalized state and vegetative state, most patients have increased intracranial pressure, which may cause brain hernia or even death in severe cases. It is also possible that during the treatment of cerebral infarction patients, the application of anticoagulant thrombolytic drugs or antiplatelet aggregation drugs caused by blood coagulation disorders, the patient’s blood coagulation should be tested, blood routine, and if necessary, discontinue the use of the above drugs.