1, low-sodium diet. Low sodium diet should eat less salt or smoked food; canned food are to eat less. 2, low-fat diet. Dietary intake of animal fat should be limited, cooking, more vegetable oil, cholesterol is limited to less than 300 mg per day. Fat-lowering foods are preferred to soy products. Black fungus has the effect of anti-platelet coagulation, lowering blood lipids and stopping blood cholesterol deposition. Capsicum, oats and barley are good for lowering blood lipids and can lower blood cholesterol and reverse fatty liver. 3, moderate intake of protein. Unless combined with chronic renal insufficiency, there is generally no need to strictly limit the intake of protein. Eat fish protein 2-3 times a week, can improve vascular elasticity and permeability, increase urine, sodium discharge, thereby reducing blood pressure. 4, eat more green vegetables and fresh fruit, is conducive to myocardial metabolism, improve myocardial function and blood circulation, to promote the excretion of cholesterol, to prevent the development of hypertensive disease. 5, avoid eating foods that excite the nervous system, such as wine, strong tea, coffee, etc. Smoking is extremely harmful to the heart because (1) cigarettes contain tar, nicotine and carbon monoxide, which are extremely harmful to the human body. (2) When the blood concentration of carbon monoxide hemoglobin is too high, it can cause a decrease in blood oxygen concentration, insufficient oxygen supply to the tissues, edema of the inner walls of the arteries, endothelial damage, lipid infiltration into the walls of blood vessels, and accelerate the formation of atherosclerosis. (3) patients with coronary heart disease, smoking can accelerate its progress and cause heart attacks. Heavy smoking can induce ventricular fibrillation and other serious arrhythmias, and become one of the causes of sudden death.