Herpes fever in children is a very common disease, children with herpes fever after what to do, to do the following: first, try to give the child to drink water, but also let the child rest properly, the body temperature down; second, if the child’s mouth pain, refusal to eat, but also to properly supplement the nutritious food, eat food to light, low fat, low calorie, low salt, avoid greasy, moldy food; third, need to pay attention to the child’s oral hygiene, keep the mouth clean, gargle saline every day to relieve the affected pharynx and mouth. Third, we need to pay attention to the oral hygiene of the child, keep the mouth clean, and use saline to rinse the child’s mouth every day to relieve the discomfort of the child’s throat and mouth. If the body temperature exceeds 38.5 degrees, appropriate antipyretic drugs, such as Merlin, can be used. If the body temperature exceeds 39.5 degrees, there is vomiting, convulsions or affect the diet or sleep, you can cooperate with treatment such as infusion therapy or symptomatic central cooling measures, and also need to open the windows more often to ventilate.