Febrile convulsions are a common emergency symptom of abnormal central nervous system function in pediatrics, more common in infants and young children, with a prevalence of 6 months to 5 years old, with a peak of 9 months to 20 months. Most febrile convulsions are caused by various infectious diseases, the most common being upper respiratory tract infections. The typical clinical manifestations of febrile convulsions are sudden loss of consciousness, mostly accompanied by upturned eyes, staring or squinting, tonicity of facial or limb muscles, spasms or incessant jerking. The duration of seizures can range from a few seconds to a few minutes, sometimes with repeated episodes or even in a continuous state. Characteristics of simple febrile convulsions: 1. Only seen in infants and young children from 6 months to 3 years old; 2. Typical seizures are mostly when there is a sudden rise in body temperature, which is mostly above 39-40°C; 3. Seizures are mostly in the form of tonic-clonic seizures, a few are tonic, clonic or aphasic seizures without aura, usually only one seizure in a fever, a few can have multiple seizures, mostly awake in a few minutes, without leaving any neurological 4. EEG examination, within 1 week of seizure, 20%-60% of children have increased non-specific slow activity on EEG, which returns to normal after 1 week. Characteristics of complex febrile convulsions: 1. Seizures may occur even with low fever (<38°C) and last for a long time; 2.