Drinking tea generally does not lead to low heart rate, if the heart rate is low need to consult a doctor to rule out cardiovascular disease. Normal adults in a quiet state, the heart rate of 60 ~ 100 times / min, an average of about 75 times / min, and the heart rate can be with age, gender and different physiological state and the occurrence of relatively large fluctuations, the newborn’s heart rate is relatively fast, with the age of the growth, and gradually close to the level of adults. Because tea contains caffeine, theophylline and other ingredients, and these substances in the human body, after entering the body, may prompt the human body central nervous system excitation and sympathetic nervous system excitation, so the normal people in the tea will lead to increased heart rate; Secondly, in the strenuous exercise, hyperthyroidism, the application of adrenal glands and other influences, will also lead to increased heart rate. Usually the elderly, athletes and in the sleep state will lead to slow heart rate, which is a normal physiological phenomenon; and after the application of metoprolol, digitalis and other drugs, as well as under the influence of hypoxia, hyperkalemia and other factors will lead to slow heart rate, may be caused by pathological factors. If the symptoms of low heart rate occur after drinking tea, it is recommended to go to the hospital in time, to rule out physiological factors and then early formal treatment. Specific diagnosis and treatment should follow the doctor’s advice.