Palpitations are a feeling of discomfort or panic when the heart is beating spontaneously. There are many clinical reasons that can induce palpitations, which can be roughly divided into physiological and pathological factors, and pathological factors can be divided into cardiogenic and non-cardiogenic diseases, the symptoms of palpitations should be found in time to treat the cause. A physiological factors: 1, hormonal changes: women after pregnancy due to changes in hormone levels in the body, there will be occasional palpitations; 2, dietary factors: after drinking alcohol, strong tea or coffee, can stimulate nerve excitation palpitations; 3, drug factors: the application of certain drugs such as epinephrine, aminophylline, atropine, etc. will appear drug side effects such as palpitations, when the symptoms can be reduced or disappear after stopping the drug; 4. Other: palpitations can occur during strenuous exercise, emotional excitement, tension. Second, pathological factors: 1, cardiogenic diseases: the most direct cause of palpitations for arrhythmias, including rapid arrhythmias, such as frequent ventricular premature, frequent atrial premature, supraventricular tachycardia, atrial fibrillation, ventricular tachycardia, etc.. Slow arrhythmias such as sinus bradycardia and atrioventricular block are also included. In addition to chest tightness and chest pain, patients with organic heart disease, such as myocardial ischemia, may also experience a reflex increase in heart rate and thus palpitations. Heart failure will also appear to increase the heart rate, compensate for the increase in cardiac output and produce symptoms of palpitations; 2. Non-cardiogenic factors: electrolyte disorders, fever, anemia and hyperthyroidism may cause patients to have clinical symptoms such as palpitations, chest tightness, shortness of breath and weakness. Hypoglycemic episodes also often present palpitations with corresponding symptoms such as sweating, hand trembling, and weakness, which require active treatment. In addition, some neuropsychological problems, also often appear the symptoms of palpitations, such as cardiac neurosis, anxiety, depression patients, due to large emotional fluctuations, thus appearing chest tightness, chest pain, palpitations, dizziness and other symptoms, this situation does not require excessive drug intervention, should find the cause to adjust the patient’s psychological state, improve the bad state of mind, palpitations can be alleviated.