The causes of bacterial infection fever in children: 1, due to the relatively low immunity of children, children due to growth and development is not perfect, children’s immunity is not gradually enhanced, the child will appear than the chances of adult infection is greater. 2, children due to improper care, if parents do not add clothes to the child in a timely manner, the child will be infected after the cold. 3, cross-infection, some children after kindergarten or elementary school. After that, as other children in the classroom become infected with bacteria, it will cause cross-infection of bacterial infection. The air in the child’s classroom is relatively airtight, and bacterial infections can multiply within a short period of time. 4, because the child has less exercise, the child does not have proper exercise, the immune system is not stimulated, the child’s infection is also more, there will also be bacterial infections.