Normal human heart rate is 60-100 times/minute, when it is greater than 100 times/minute, you will often feel a faster heartbeat. It is normal to have an accelerated heart rate after a cold, especially after a fever, and it is fine to closely monitor the change in body temperature and to reduce the fever if necessary. If the heart rate accelerates after the fever is reduced or after the cold is cured, especially when combined with chest tightness and shortness of breath, consider the possibility of viral myocarditis and seek medical attention for symptomatic treatment. If heart failure and arrhythmias occur, cardiotonic, diuretic and vasodilator medications should be given, and electrocardiogram and cardiac ultrasound are recommended to rule out organic heart disease. Usually, we should try to pay attention to rest and not to overexert, to reduce heart rate, blood pressure and myocardial contraction, to reduce the load on the heart, and to perform appropriate exercises to improve physical fitness.