A seizure, transient, and often stereotyped clinical phenomenon consisting of different signs and symptoms caused by highly synchronized abnormal discharges of neurons in the brain from different etiologies is called seizure. A chronic brain disorder with recurrent seizures is called epilepsy. Epilepsy with a definite cause is called symptomatic or secondary epilepsy; those that cannot yet have a definite cause are called cryptogenic epilepsy. The causes of secondary epilepsy include: 1. Cortical developmental disorders. The cause of secondary epilepsy is called symptomatic or secondary epilepsy. 2. Brain tumors. Both primary and secondary, benign and malignant tumors can cause seizures, and most of these tumors are located in the cortex. 3, head trauma or brain surgery. Head trauma combined with cerebral hemorrhage can cause epilepsy; epilepsy can occur after cranial drilling and glioma resection. 4, cerebrovascular disease. Commonly seen in young and middle-aged people with cerebrovascular malformation, cerebral venous sinus thrombosis. 5, central nervous system infection. Such as tuberculous meningitis, viral meningitis, bacterial meningitis, neurosyphilis, etc. can appear seizures. 6, parasites. Schistosoma haematobium, cerebral lung fluke, and porcine cysticercus are often parasitized in the cortical motor area of the central nervous system. 7, genetic metabolic diseases. Such as intracerebral epidermis-like cysticercosis, lysosomal storage disease, etc. 8, neurological degenerative diseases. Such as Parkinson’s disease, multiple sclerosis. 9, encephalopathy. Such as ischemic-hypoxic encephalopathy, uremic encephalopathy, CO toxic encephalopathy. 9, other. Such as systemic lupus erythematosus, hypocalcemia, hypoparathyroidism, etc.