Under normal circumstances, patients with rapid heart rate have physiological causes as well as pathological causes: a. Physiological rapid heart rhythm is usually caused by the following factors: 1. Because of sympathetic overexcitation, for example, patients are emotionally overexcited, overexcited or nervous, anxious and other factors, can lead to rapid heart rate. 2. If a large amount of alcohol or drinking strong coffee, strong tea, etc., can also lead to rapid heart rate. 3. Strenuous exercise The situation of rapid heart rate can also occur. Pathological factors that cause rapid heart rate are as follows: 1. Endocrine diseases, such as hyperthyroidism and hyperadrenocorticism, can cause rapid heart rate. 2. Patients with elevated body temperature during infection can also have rapid heart rate. 3. Cardiogenic diseases, such as myocarditis, pericarditis, and coronary artery disease, can also cause rapid heart rate when the blood supply to the heart is insufficient.