The causes of pediatric convulsions are different in different periods: 1. neonatal period or infancy within two months: due to hypoxic injury during birth, sequelae caused by asphyxia resuscitation, or central nervous system infection, congenital genetic metabolic diseases, hypocalcemia, etc.; 2. infancy: febrile convulsions, i.e., fever and cramps, predominantly without sequelae, from more than two months to less than two years of age; 3. childhood: occurring mostly in six years of age or older, mainly intracranial lesions, common in encephalitis, epilepsy. Intracranial tumors, etc.