Children aged 9 months can apply acetaminophen suppositories because they are non-steroidal anti-inflammatory drugs that can effectively reduce the synthesis of prostaglandins in the body and have a cooling effect. In particular, acetaminophen suppositories can have a good antipyretic effect in children as young as 9 months of age whose body temperature reaches 38.5°C in the axilla, which can cause symptoms such as poor mental status and crying. Acetaminophen suppositories are administered rectally and can be used in children as young as 9 months of age to avoid the disadvantages of oral administration of drugs.