To have an EEG in children, you need to register with the pediatrics or neurology department and then go to the EEG department for an appointment to get a checklist. Electroencephalogram is mainly used to assist in the diagnosis of some clinical diseases, such as epilepsy, encephalitis, craniocerebral trauma, coma patients, intracranial space occupation and other diseases by understanding whether there are abnormal discharges in the brain function, so it is necessary to consult the Department of Pediatrics or the Department of Neurology, and some hospitals have specialized pediatric neurology departments. General EEG examination, as long as the child is cooperative, usually takes about 5 to 10 minutes, if the condition requires some patients need to use 24-hour dynamic EEG. Before the examination, children need to cooperate, remove any foreign objects from their heads, wash their long hair, and keep their hair dry. During the examination of children, the patient should try to keep quiet and not move around, parents should not pat the child frequently, and it is better to let the child fall asleep during the examination, etc. The main purpose is to avoid interference and prevent inaccurate examination results. If some children do not cooperate, you can use some hypnotic drugs under the guidance of professional doctors if necessary.