Brain infarction, also known as ischemic stroke, after the patient has a brain infarction, due to the thin and vascular nasal mucosa, some patients can have nose bleeding symptoms, which can be affected by factors such as hypertension, drugs, mood, etc. 1, hypertension influence: due to the hardening and narrowing of the blood vessels in the brain, it is easy to induce brain infarction when hypertension, while the increase in blood pressure can lead to the rupture of the nasal mucosa vessels, which manifests as nasal bleeding; 2, drug influence : Due to anticoagulation therapy, thrombolytic therapy or antiplatelet aggregation therapy after cerebral infarction, patients will have adverse reactions such as bleeding tendency, and nasal bleeding may occur; 3, mood influence: some patients are too anxious and anxious after suffering from cerebral infarction, the sympathetic nerves are too excited and capillaries are dilated, which can induce nasal bleeding. If the patient has only slight nasal bleeding, it can be observed first. If the bleeding is serious, consider electrocoagulation to stop the bleeding.