Children are in a high metabolic state when they have a fever, so their bodies tend to be weak after a fever, and their symptoms can be improved by drinking more water and increasing nutritional intake. 1. Drink more water: children will sweat a lot during fever and may be dehydrated, so parents should pay attention to replenish water for their children. 2. Increase nutritional intake: after the child has a fever, parents should pay attention to replenish the child with proteins and vitamins, and can add fish, chicken, fruits and vegetables and other foods as appropriate. However, due to the child’s fever, gastrointestinal function has not fully recovered, so add food should be moderate, so as not to add too much, increase the burden on the gastrointestinal tract. Usually should avoid the baby infection, can be appropriate ventilation, avoid going to crowded places.