Drinking tea is good for the heart, but it should be analyzed from several angles. Heart patients must drink light tea, do not drink strong tea, and try not to drink tea before going to bed. Because strong tea contains too much caffeine, can make people excited, insomnia, restlessness, which can easily induce heart disease, especially easy to induce the emergence of angina. But tea also contains theophylline, caffeine, chlorophyll and a variety of vitamins, caffeine and theophylline have a cardiac diuretic effect, used in coronary artery disease, heart failure patients, but the benefits, such as sinus bradycardia patients, long-term slow heart rate, even with atrioventricular block, the heart rate per minute in 60 times / min or less, the theophylline in tea, caffeine can make the heart rate faster. So drinking tea is good for this type of patients, with diuretic effect. It is also good for patients with heart disease and poor heart function, and can increase the effect of diuretics, and also excrete water and salt, which can reduce the burden on the heart. In addition, tea can also reduce the concentration of cholesterol in the blood, so patients with hyperlipidemia benefit from drinking tea, and certain substances in tea can protect the elasticity of capillaries and help prevent the hardening of blood vessels. The overall effect of drinking tea on heart patients is that the benefits outweigh the disadvantages.