Fever in children is one of the common childhood illnesses. If a high fever is not treated, it is likely to cause convulsions. Repeated convulsions have a certain chance of leaving sequelae, so what are the sequelae of fever and convulsions in children? The specific can be divided into the following two kinds: epilepsy: children who do not get treatment for fever, repeated convulsions, will cause damage to the nervous system, the direct result is to cause epilepsy. The body of a child is not fully developed, and if it causes epilepsy, it is very difficult to eradicate it. Therefore, children with fever and convulsions must seek medical attention in time to avoid epilepsy symptoms. Hydrocephalus will not only affect the child’s intellectual development, but also cause headaches and dizziness, which is a very dangerous sequel. In summary, parents must be very patient and careful when bringing up their children, not too careless. If the child has a convulsion, he or she must seek medical attention in time. Most of the sequelae caused by fever convulsions are irreversible diseases, so parents must pay extra attention.