1. Idiopathic (primary) epilepsy: refers to epilepsy in which the brain fails to find relevant structural changes and metabolic abnormalities. It may be more closely related to genetic factors, but the current level of technology cannot make a scientific conclusion. 2. Symptomatic (secondary) epilepsy: that is, with clear brain lesions and metabolic disorders. (1) Abnormal brain development: such as cerebral gyrus malformation, callosal hypoplasia, gray matter heterotopia, neurocutaneous syndrome, congenital hydrocephalus. (2) Cerebrovascular diseases: such as intracranial hemorrhage, thrombosis, embolism, vascular malformation, vasculitis, etc. (3) Central nervous system infections: such as intracranial infections caused by bacteria, viruses, fungi and parasites. (4) Trauma: birth injury or traumatic brain injury. (5)Poisoning: such as carbon monoxide, poisonous rodent poisoning. (6) Cerebral ischemic-hypoxic diseases: such as hypoxia-ischemia at birth, muffled syndrome, excessive dehydration due to diarrhea. (7) Metabolic diseases: such as mitochondrial diseases. (8) Intracranial occupational diseases: such as tumors, cysts, tuberculomas, parasites, etc.