It is very normal for children to have a fever that does not go away for two days. Most fevers in children are caused by various pathogenic infections, which require a process of infection control. If a child has a fever after a viral infection, it takes 5-7 days to control the viral infection. Children with fever due to viral infection also need to last for 2-3 days or even longer. Although the fever does not subside for 2 days, as long as the child is still in good spirits and has a good appetite for food, it is only necessary to give the child appropriate warm water and physical cooling. If the child’s body temperature exceeds 38.5℃, take antipyretic drugs, such as ibuprofen, etc. Most fevers will subside slowly in 3-5 days.