Erysipelas is an acute rash infection commonly seen in infants and young children, also known as infantile roseola, characterized by a high fever for 3 to 4 days, followed by the resolution of the fever and rash. It is a retrospective diagnosis, which means that it is difficult to diagnose during the child’s fever, once the fever has subsided and a rash appears at the same time, then a diagnosis can be made. Therefore, for children aged 7 to 13 months, we should be highly alert to this disease when they develop a persistent high fever, because E.R. is a viral infection, mainly human herpes virus types 6 and 7, and does not require special treatment, only symptomatic management. The main manifestation of the child is a persistent high fever, so it is most important to hydrate the child to enhance nutrition and reduce the fever treatment. The principle of fever reduction is to give the child an antipyretic medicine when the body temperature exceeds 38.5 degrees Celsius, you can choose ibuprofen suspension or acetaminophen, which is commonly used in Tylenol, and below 38.5 degrees Celsius, physical cooling can be done. When the child suddenly high fever lasts for 3 to 5 days, pharyngeal tonsil lymph nodes these enlargement are relatively mild, to consider the possibility of this disease. When the fever subsides and the rash is clearly diagnosed, there is no need to take any other medication, just drink more water and wait for the rash to subside, and for children with dilute stools, symptomatic treatment can be given, and children with concurrent encephalitis and thrombocytopenic purpura should be actively treated symptomatically. The rash is a common childhood rash, and taking antiviral medication will not shorten the course of the disease, so hydration and nutritional treatment is the key to treating the disease.