The normal heart rate for infants is 110-130 beats/min, more than 130 beats/min is tachycardia, while the lower limit of normal heart rate varies, the minimum cannot be lower than 60 beats/min, most heart rate is 70-80 beats/min, which is an ideal heart rate. In Chinese medicine, the standard of heart rate is more strict, the heart rate over 80 beats/min is internal heat, and the heart rate below 70 beats/min is internal cold. Heart rate only reflects the health status of the human body from one perspective, you can’t make some kind of judgment based on heart rate alone, you need to combine it with clinical manifestations. Pediatric upper respiratory tract infection is a common disease, commonly with elevated body temperature, redness and swelling in the throat, heart rate over 100 beats/min, after treatment if the heart rate drops to about 80 beats/min, the body temperature will not rise again. If the heart rate is above 100 beats/min after antipyretic or antibiotic treatment, the body temperature will rise again, and the heart rate can be used as a judgment of the efficacy of some diseases.