An anal temperature of 36.5 degrees-37.5 degrees is normal for children, and it is usually normal for anal and ear temperatures to be 0.5 degrees higher than the axillary temperature temperature. Anal thermometry is used for children up to 1 year of age, uncooperative children, and children who are unconscious or in shock. Insert the anal meter into the lubricant and slowly push it into the anus about 3cm-4cm, measure for at least 3 minutes, 36.5 degrees-37.5 degrees is normal. Anal temperature is the most accurate method of temperature measurement. If the anal temperature is greater than 37.8 degrees, sublingual temperature is greater than 37.5 degrees, and axillary temperature is more than 37.3 degrees, it is considered as fever. In this case, the primary cause of fever needs to be clarified, and it is recommended to go to the pediatric internal medicine department for an interview, and blood tests are needed.