The normal human heartbeat is 60-100 beats per minute/minute, and a heartbeat of 90 beats per minute is within the normal range, so there is no need to worry. If the range of heartbeat is normal, but the patient will have chest tightness, shortness of breath, panic, or even dizziness and fainting, if this happens, active treatment is needed. It is recommended to go to the local hospital for examination. The examination items include electrocardiogram, cardiac ultrasound, color Doppler, coronary CTA, and myocardial imaging with nuclear, through which the primary pathogenesis can be determined, and the cause of chest tightness, discomfort and panic is not due to arrhythmia or insufficient supply of blood to the coronary arteries and the symptoms. Once the primary disease is identified, it is important to treat it actively and do a good job of cardiovascular prevention and health care.