If a child has fever and phlegm in the throat, treatment can be chosen according to the specific situation of the child, as follows: 1. If the symptoms are more serious, you can first give the child ibuprofen pellets to cool down and use ultrasonic nebulization to relieve the symptoms of phlegm in the throat. It is also necessary to treat the cause of the fever and phlegm in the throat. The symptoms are often caused by viral or bacterial infections in the trachea and bronchi, which can be treated by taking antiviral drugs or cefixime pellets to relieve the symptoms.