The heart rate of a normal adult is between 60 and 100 beats per minute, and when the heart rate exceeds 100 beats per minute it is called tachycardia. Tachycardia may occur in normal human physiological state or in patients with organic heart disease and other systemic diseases. 1. Normal physiological state: when healthy adults are in a normal state of emotional excitement, exercise, defecation, etc., tachycardia may occur, and this situation does not require treatment. 2. Organic heart disease: such as hypertension, heart failure, arrhythmia, coronary arteriosclerotic heart disease and other organic heart disease patients, can be due to the pathological state of the heart lead to rapid heart rate. 3. Other systemic diseases: such as hyperthyroidism, anemia and other diseases, can be caused by the primary cause of the body to have a rapid heart rate, and sometimes the rapid heart rate is also a compensatory performance. In this case, it is necessary to treat the primary disease first, and the heart rate can return to normal after the original disease is corrected. In the event of a rapid heart rate, it is important to identify the cause of the problem in a timely manner and treat it accordingly. In the treatment should also follow the doctor’s instructions, the patient should not give up the treatment arbitrarily.