The main causes of fever and red bumps on the face of children include the following: first, the symptoms caused by chickenpox in children. When a child is infected with the varicella-zoster virus, it can cause red bumps on the face with fever, and after the disease progresses, it quickly spreads to the front and back of the child, and the red bumps slowly become blister-like, and symptoms of umbilicus can appear. Children can be given timely antiviral treatment, such as the application of Blue Scutellaria oral solution. Secondly, the symptoms are caused by children suffering from urticaria. Children with urticaria will have red bumps on their face, accompanied by bacterial or viral infections, and fever. It is necessary to give children timely anti-infection and anti-allergy treatment, such as cephalosporin, together with loratadine.