The AnGongNiuHuangPill can not prevent stroke, AnGongNiuHuangPill has the effect of clearing heat and detoxifying, calming and opening the body, can be used for stroke coma and cerebral hemorrhage see high fever convulsions, delirium symptoms. The main prevention of stroke is to prevent the formation of cerebral arteriosclerosis, such as patients suffering from hypertension, diabetes, hyperlipidemia, hyperhomocysteinemia, these diseases can lead to the hardening of the patient’s cerebral arteries, so the prevention of stroke must prevent these underlying diseases, usually also take oral medication such as bai aspirin to prevent platelet aggregation. If the patient has high blood lipids and atherosclerotic plaque formation on neck ultrasound, oral statin lipid-lowering drugs are needed to lower lipids, stabilize plaque, protect endothelium and initiate secondary prevention of cerebrovascular disease.