The actual process of vagus nerve stimulation is as follows: a coil is surgically placed on the vagus nerve in the left neck, and the stimulation device is buried in the chest. If the patient’s seizures are precursors, when the patient feels a precursor at home or on other occasions, a small structure with a magnet inside can be used and crossed over the chest to produce additional stimulation to interrupt an impending seizure, or to reduce the duration or severity of the seizure. Currently, about 80% of patients worldwide who have used vagus nerve stimulation to help control their seizures have some improvement in their epilepsy, and 40% of patients have had their seizures reduced by half. This effect can be maintained over time, and seizure control outcomes may increase over time. In addition, some patients experience improved mood, wakefulness, and memory through vagal stimulation of the brain. It may also improve the quality of life of patients with epilepsy by reducing the amount of antiepileptic medication and the chance of being taken to the hospital for seizures. There are some side effects associated with vagus nerve stimulation, including temporary throat rasping and pitch changes, coughing, throat tickling and shortness of breath when the machine is first adjusted, which are caused by stimulation of certain body structures that are innervated and controlled by the vagus nerve itself. Patients with long-term use have reported transient heart rhythm changes, also known as arrhythmia. In addition, patients with this device should avoid short wave, microwave or therapeutic ultrasound therapy, and there is no definitive conclusion on whether magnetic brain imaging will have an effect on the device. Advantages: 1. It has been used by patients from all over the world and can reduce seizures; 2. It is relatively safe and has less side effects than epilepsy surgery; 3. Disadvantages: 1. The effect varies from person to person, and some people are not suitable for it (e.g. to achieve complete seizure-free); 2. The price is more expensive than other treatments.