Determining whether a child needs fluids after a bacterial infection causing a fever depends on the specific situation. First of all, if the bacterial infection in children is relatively mild, the child’s fever temperature is not high, and the child’s mental state is still okay. In most cases, only oral antibiotics are needed. If the child’s bacterial infection is severe, the fever is mainly high and the child’s mental state is poor, even affecting the whole body and causing sepsis. At this time, the child should be given timely infusion treatment, such as the application of cephalosporin or erythromycin, etc.