1, medication guidance: infusion of drugs, do not arbitrarily adjust the drip rate; remember the name, dosage, usage, effects and adverse reactions of the drugs taken; medication on time, do not arbitrarily stop or reduce the dosage to prevent relapse or aggravation of the disease, and do not arbitrarily increase the dosage to prevent drug poisoning; patients taking digoxin, such as yellow vision green vision, each time before taking the drug should count the pulse, if the pulse < 60 times / min or appear other If the pulse is <60 beats/min or other arrhythmias occur, suspend the medication and consult a doctor promptly. 2. Dietary guidance: Diet should be low-salt, light, easily digestible and nutritious, and each meal should not be too full. 3, functional exercise: appropriate activities according to the classification of cardiac function, cardiac function level I to limit physical activity; cardiac function level II should increase rest, can engage in daily activities; cardiac function level III to limit activities, increase bed rest time; cardiac function level IV should be absolute bed rest. After the condition improves, gradually increase the amount of activity to the principle of no symptoms. 4.Improve lifestyle: control blood pressure, blood sugar, reduce fat, quit drinking, and obese people should lose weight. 5.Avoid triggering factors: such as infection (especially respiratory tract infection), overwork, emotional excitement, too much infusion too fast, etc. Women of childbearing age should decide whether pregnancy and natural delivery are possible under the guidance of a physician.