Generally speaking, most fevers are caused by infection. Infected pathogens can be bacteria, viruses, mycoplasma, etc. The first two are the most common. It is recommended that you give your child antiviral drugs. Bacterial infection is easy to occur in the late stage of virus infection. If it is inconvenient to go to the laboratory, you can take antibiotics and antiviral drugs at the same time. If the temperature exceeds 38.5 degrees Celsius, you can use antipyretics.