Brain infarction, nose bleeding, is generally not harmful if the patient is bleeding in small amounts. If the bleeding is large, it can cause hemorrhagic anemia, and in serious cases, hemorrhagic shock can occur. For example, whether the patient applies large doses of anti-platelet aggregation, such as aspirin and clopidogrel, or whether he applies anticoagulant agents, such as low-molecular heparin and heparin, etc. The blood routine and blood coagulation should be checked, and if there is any abnormality, the anti-platelet aggregation and anticoagulant treatment should be stopped in time, and if necessary, hemostatic drugs can be given. The patient should also be observed for bleeding from other areas, such as oral mucosa bleeding, upper gastrointestinal bleeding, skin bleeding spots, bruises, etc.