Some patients with secondary epilepsy can be cured. Secondary epilepsy is epilepsy that occurs secondary to organic cranial injury. There are many causes of organic cranial injury, such as hyperthyroidism, hypothyroidism, electrolyte disorders, kidney or heart disease, cerebral hemorrhage, brain tumors, and autoimmune encephalitis. When organic injury occurs in the cranial brain, the local lesion causes abnormal discharge in the cerebral cortex, which can trigger epilepsy. For the treatment of secondary epilepsy, medication or surgery is usually used to control the seizures. For example, if the seizures are induced by hyperthyroidism, hypothyroidism, or electrolyte disorders, the seizures will be improved or even cured by actively controlling the related symptoms; if the seizures are caused by kidney or heart diseases, the seizures can be effectively treated by controlling the related kidney and heart diseases; if the seizures are caused by brain hemorrhage, the hematoma should be removed by drilling and drainage or craniotomy, and antiepileptic drugs should be given as prescribed by the doctor. In case of cerebral hemorrhage, the hematoma should be removed by drilling and drainage or craniotomy, and anti-epileptic drugs, such as carbamazepine, sodium valproate and ethosuximide, should be given as prescribed by the doctor. However, for secondary epilepsy caused by some serious diseases, such as brain tumor, tumor metastasis or autoimmune encephalitis, the cure rate of epilepsy in these patients is low and the prognosis is relatively poor, so surgery, radiotherapy and immunotherapy can be given to improve the treatment effect. Therefore, whether secondary epilepsy can be cured is related to the specific etiology. In clinical practice, if a patient with epilepsy is seizure-free for more than 5 years and has repeated EEGs and long-range EEGs with completely normal results during this period, the medication can be gradually reduced until it is discontinued under the guidance of a physician. If there are still no seizures after stopping the medication, the epilepsy is cured.