The causes of frequent palpitations mainly include physiological factors such as mental overstress, smoking and drinking, and strenuous exercise, and pathological factors such as cardiac arrhythmia and enhanced heartbeat. 1. Physiological factors. People who engage in strenuous exercise may experience transient insufficiency of blood supply to the heart, which in turn leads to palpitations. Since tobacco, alcohol, coffee, and strong tea contain stimulating factors, patients who ingest them for a long period of time may experience different degrees of stimulation to the heart, resulting in palpitations. Patients who are in a state of tension and anxiety for a long time may also have palpitation. 2. Pathological factors. For patients with arrhythmia, cardiac hypertrophy, hyperthyroidism, pheochromocytoma and so on, palpitation may also occur. Palpitations may also occur when the autonomic nervous system is dysfunctional. If palpitations occur frequently, it is recommended to go to the hospital in time for electrocardiogram, cardiac ultrasound, thyroid function and other relevant examinations under the guidance of the doctor, so as to clarify the cause of the disease and then treat the cause to avoid delaying the condition.