Should epilepsy patients stop their medication before an EEG or not? This is a concern for many people with epilepsy. Often some patients with epilepsy do not stop taking their antiepileptic drugs before having an EEG, remotely monitored EEG or magnetoencephalography in the hospital, thus resulting in no recorded epileptic waveforms, which affects the diagnosis and treatment effect. They believe that it is only after stopping the medication that the examination can correctly reflect the EEG physiological activity and record whether there is an epileptic waveform. However, there is also disagreement with this view, and some patients are concerned that discontinuing medication may worsen the condition. It is true that a brief discontinuation of medication prior to EEG can reflect the bioelectrical activity of brain cells more objectively, thus helping to improve the diagnostic positivity rate of EEG and other tests. However, discontinuing medication before the test has the potential to induce grand mal seizures, especially for pediatric patients who are at greater risk. Therefore, it is important not to clinically put patients at risk simply for the sake of a higher positive rate, although in many cases this risk is only potential and does not necessarily occur. As one of the important objective indicators for the diagnosis of epilepsy, EEG examination is crucial, but it is important to understand and recognize the role of EEG correctly. The diagnosis of epilepsy should not be based solely on the presence of the word “abnormal” on the EEG report. If the EEG shows only general non-specific abnormalities, such as increased slow waves, mild asymmetry, poor regulation, etc., it cannot be used as a basis for the diagnosis of epilepsy. Only if epileptiform discharges are present, its diagnostic significance is greater. It should also be noted that the rhythmic high-amplitude slow waves that occur during hyperventilation in children cannot be considered abnormal. There are 0.3% to 3% of the normal population with epileptiform discharges on the EEG, but no seizures; and there are some patients with epilepsy who have normal interictal EEG examinations, so epilepsy cannot be excluded because the EEG is normal. The EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG, and the EEG can be used as a tool to monitor the EEG. The positive rate will be improved if the formal operation requirements are followed, such as the examination time is at least 20-30 minutes, various evocation tests are done carefully, and the system of nighttime EEG examination is established to record the sleeping EEG waveform.