If a pediatrician has an upper respiratory tract infection and develops a fever, the temperature should be taken. If the temperature is different, different treatments are taken according to the different temperatures. The details are as follows: 1. If a child has no underlying disease, no previous high fever or cramps, and a temperature of 38.5°C or higher, only then consider giving antipyretics. The most common antipyretics are ibuprofen drops or ibuprofen oral solution, etc., namely Merlin, acetaminophen is the most common antipyretic for children, children with G6PD enzyme nematode disease should be used with caution, other antipyretics, such as Anacin and Nimesulide, but now are prohibited for children. If the temperature is above 38.5℃, but the child is tolerant and in good spirits, medication may not be used. 3. If the child has a fever below 38.5℃, physical cooling is the mainstay, including warm water baths, hot water for hands and feet, and other physical cooling methods.