1, according to the doctor’s prescription, take the medicine regularly and quantitatively, before taking digitalis drugs, we should check the pulse rate, the pulse rate is less than 60 times/min, we should suspend the medicine, and mainly observe whether there is digitalis poisoning reaction, such as nausea, vomiting, nadir and color vision, neuropsychiatric changes. 2, the diet should be light, easy to digest, a small number of meals is appropriate, avoid too full, avoid strong tea, coffee, etc., to limit sodium intake, keep the bowel movement smooth, avoid force anger earned. 3, maintain emotional stability, avoid emotional excitement. 4, quit smoking. Because cigarettes contain nicotine and carbon monoxide, these components with smoke into the blood can cause vasoconstriction, heart rate increases, blood pressure increases, thereby increasing the burden on the heart, causing arrhythmias in serious cases.