If a three and a half year old child’s fever does not go down with a pediatric antipyretic suppository (generally referred to as an acetaminophen suppository), it is recommended that the child go to the hospital and be evaluated by a physician to see if the cause of the fever is serious or the dosage is not appropriate, and to determine whether the child needs to be admitted to the hospital or not. For 3.5 year old children with fever, the use of acetaminophen suppositories to reduce fever, if the effect is not satisfactory, can be due to the seriousness of their condition, high fever does not go down, the use of antipyretic drugs are not effective, but also can be inappropriate dose of antipyretic drugs, or the drug has not yet taken effect, it is recommended to go to the hospital, a specialist to determine the cause of the problem. If the condition is serious, such as intracranial infection, severe respiratory infection, etc., with recurrent fever, and the correct use of antipyretic medication is not effective in reducing the fever, hospitalization is required after evaluation by a physician to facilitate monitoring of changes in the condition and to prevent more serious complications from occurring. For more stable conditions, due to the drugs have not yet taken effect or the use of antipyretic drugs dose is not correct, under the guidance of the physician to correctly use antipyretic drugs, temporary non-hospitalization, continue to observe.