More serious consequences such as ischemia of brain tissue, cerebral infarction, and sensory organ disorders may occur after external carotid artery occlusion, and it is recommended to consult a doctor in time for active treatment. External carotid artery occlusion is mostly caused by atherosclerosis, diabetes mellitus, and high blood lipids. Symptoms of ischemic brain tissue, such as dizziness, headache, vertigo, decreased thinking ability, etc., may occur; or symptoms of cerebral infarction, such as permanent blindness, confused thinking, slurred speech, hemiparesis, etc.; or symptoms of transient darkness in one eye, permanent blindness of the eyes, and disorders of the sensory organs, etc., may also occur. Active treatment is recommended to improve the symptoms. Generally, aspirin and Panax ginseng tablets can be used as prescribed by the doctor, and bypass surgery of superficial temporal artery and middle cerebral artery can be performed through cerebral perfusion examination. Usually pay attention to avoid high cholesterol, high sugar food, such as pork, fat intestines, cream, etc., pay attention to a light diet, avoid spicy and stimulating food. If the diagnosis of external carotid artery occlusion is confirmed, it should be actively treated according to medical advice.