A normal person has a pulse rate between 60 and 100 beats per minute, if it is higher than 100, it is called sinus tachycardia, and if it is lower than 60, it is called sinus bradycardia. Both sinus tachycardia and sinus bradycardia indicate that the body may have abnormal conditions. Therefore, in case of panic, chest tightness, palpitations and other discomforts, you must go to the hospital actively to identify the cause of rapid or slow heart rate through ECG, cardiac ultrasound, coronary CTA, etc., and give active treatment. For example, heart valve disease, coronary artery disease, hyper- or hypothyroidism, severe anemia, malnutrition, malignant tumors, etc. may cause a patient to have a rapid or slow heart rate. Identify the cause and give active treatment so as to recover health faster.