The basal body temperature of a normal pediatrician is 36.9°C to 37.5°C. Generally when the body temperature exceeds the basal body temperature by more than 1℃, it can be considered feverish. Among them, hypothermia is defined as a body temperature fluctuating around 38℃ and hyperthermia when the body temperature is above 39℃. If the fever is more than two weeks, it is called long-term fever. 38.5℃ or below, do not take antipyretic medicine or fever reducing injection, but give the baby more water and use physical cooling method to reduce fever. If the baby’s body temperature is still rising after physical cooling and reaches 38.5℃ or more, you can use medicine. Parents note that you can not just lower the temperature, to find the root cause of the fever, it is best to go to the hospital to do the appropriate examination to determine whether it is a viral infection or bacterial infection, viral infection with antiviral drugs (such as ribavirin), bacterial infection with antibacterial agents (such as cephalosporins) cause, so that you can target the root cause of the fever. Note: (1) appropriate reduction of clothing to help baby heat: fever can not cover too much, children, infants are not yet sound thermoregulatory center, many parents in a cover to sweat, especially infants can not be timely heat dissipation, body temperature will rise, and some also caused a high fever convulsions, so, especially for infants and young children in fever need to be properly uncovered. (2) clinically not recommended alcohol baths for children: especially some undiluted alcohol, there are some rural or elderly people like to use a high number of white wine for bathing, which is very bad, children’s skin is delicate, easy to cause an alcohol poisoning. (3) Pay attention to give children to drink some warm water, keep the air circulation at home.