Vagus nerve stimulation (VNS) is a new surgical method for the treatment of epilepsy, which does not require localization of the epileptic focus and resection of brain tissue, but rather a set of stimulation electrodes buried at the left cervical vagus nerve and a battery buried under the left chest wall to treat epilepsy by electrical stimulation. It is suitable for patients with intractable epilepsy who cannot be localized or whose epileptic focus is widely distributed and not suitable for resective surgery, and the current indications are expanding There is a trend to expand the indications, for example, it can be used in children, to treat Lennox-Gastant syndrome or primary generalized epilepsy. Stimulation parameters, including output current, frequency, pulse width, and switching time, need to be adjusted several times after surgery in order to achieve optimal control. Common methods of treating epilepsy Drug therapy: There are many types of drugs. With regular antiepileptic drug therapy, seizures can be controlled in about 70% of patients, and half of the patients cannot stop the drug. Excisional surgery: For cases where the origin of seizures is relatively clear, the scope is relatively concentrated, and there is no significant impact on neurological function after excision, after using the method of excisional seizure foci, most patients can have their seizures controlled in combination with medication, and some patients can stop using medication.