The normal level of pulse rate is 60-100 beats per minute, and the causes of high pulse rate are as follows: 1, physiological factors, for example, after excessive mental tension and anxiety will stimulate the sympathetic nerves, sympathetic nerve excitation will lead to fast pulse rate, such as resting and sleeping poorly, excessive mental tension, excessive fatigue, and stress, at this time there will be a high pulse rate. In addition, excessive alcohol consumption, heavy smoking, drinking strong tea or coffee can also lead to rapid pulse rate.2. For endocrine metabolic diseases, such as hyperthyroidism, hyperadrenocorticism, there will also be increased pulse rate.3. For cardiac diseases, such as coronary artery disease, unstable angina pectoris, severe arrhythmia, myocarditis, pericarditis, etc., the pulse rate will be increased. 4, For cardiac neurosis, the pulse rate will also be high, if the patient has an infection, after the body temperature rises, the pulse rate will also be high.