It is normal for a child to have a fever and a heart rate of 160/minute, because an increase in body temperature often causes an increase in heart rate, and it is common for the heart rate to reach 160/minute. However, it is important to take the child to have an electrocardiogram and cardiac enzymes checked first. If there are no electrocardiogram or cardiac enzymes abnormalities, they are often caused by an increase in body temperature. At this point, if the body temperature drops, the child’s heart rate will return to normal, using the child’s fever needs to be treated with ibuprofen suspension or acetaminophen suspension to reduce the fever. In addition, if there are abnormalities in cardiac enzymes and electrocardiograms when the child has a fever, the heart rate may increase due to viral myocarditis, and the diagnosis and treatment of the child should be cautious. Secondly, cardiac nutritional drugs, such as sodium fructose diphosphate and astragalus essence oral solution, should be used.