Palpitation is a symptom of self-consciousness of palpitations in the heart, alarming and even involuntary. Palpitations are not necessarily heart disease. Palpitations can be caused by physiological and pathological factors. 1. Physiological factors: smoking and drinking alcohol, drinking strong tea, coffee, strenuous exercise, emotional excitement, after a long time to stay up late, etc. can lead to palpitations. 2. Pathological factors: heart disease can be manifested as palpitations, usually accompanied by chest pain, dyspnea and other symptoms. In addition, anemia, hyperthyroidism, hyponatremia, infection and other non-cardiac diseases can lead to palpitations and should be further identified. If symptoms of palpitations occur, a clinician should be consulted for diagnosis and treatment.