We all know that when the human body has severe anterior heart pain or retrosternal pain, accompanied by a feeling of death, chest tightness, shortness of breath, sweating, nausea, vomiting, radiating left upper limb or neck pain, lasting for more than ten minutes or half an hour, we call it angina pectoris or acute myocardial infarction. When we wake up from a dream and find that our limbs are paralyzed, accompanied by slurred speech, or even coma, or when we suddenly have severe headache, vomiting, paralysis of the limbs, or even coma while awake, we call it cerebral infarction or cerebral hemorrhage, as we generally understand it, this is the real disease. In fact, the above symptoms will appear only when the heart vessels (coronary arteries) are narrowed to 75% or the brain vessels are narrowed to 70%, and before these two degrees of narrowing, the human body has no symptoms or some mild symptoms, including some cardiovascular symptoms such as transient chest tightness, shortness of breath, discomfort in the precordial area after activity or anger, and other dizziness or transient dizziness, headache, darkness of the eyes, blurred vision, and limb loss. Other cerebrovascular symptoms such as dizziness or transient dizziness, headache, dark eyes, blurred vision, weakness of limbs, transient limb movement, slurred speech, choking and coughing, recent memory loss, slow reaction, lethargy, etc. These symptoms indicate serious cardiovascular and cerebrovascular lesions, and can also be considered as precursor symptoms of cardiovascular and cerebrovascular diseases. At this time, we must take it seriously, for example, we need to do some further examinations: electrocardiogram, blood lipid and blood sugar, thrombosis factor, ischemia factor, cardiac ultrasound, cerebrovascular ultrasound, etc., in order to understand the blood composition, the narrowing status of blood vessels, whether there is a recent possibility of the occurrence of cardiovascular and cerebrovascular disease, and if necessary, to do the gold standard examination of cardiac and cerebral CT, nuclear magnetic angiography, cardiac and cerebral angiography, so as to develop the next treatment plan. in order to develop the next treatment plan. For example, interventional treatment of thrombotic and ischemic factors in the blood, ultrasound interventional treatment of stenotic vessels, and interventional treatment (intravascular stenting) in severe cases. At the same time, it is also meaningful to remind us to change our bad habits: quit smoking, drink moderate amount of alcohol (1-2 taels of white wine per day, no more than one bottle of beer, no more than 4 taels of red wine), one or two taels of meat, one egg, 8 grams of salt per day, exercise properly, live a regular life, and keep a good state of mind.