Short-range EEGs are short, inexpensive, convenient and easy to perform, and the report card is available soon after the test. However, not all patients with epilepsy have abnormal EEGs at all times, and sometimes they may appear completely normal during the recording process. This requires a long-range 24-hour dynamic EEG with extended recording time. Long-range EEG is characterized by a longer recording time, which is more conducive to detecting abnormal brain waves, resulting in fewer missed diagnoses, and a 24-hour EEG that allows free walking with the recording box on your back. The disadvantages are high cost and long waiting time for appointment, the EEG is easily disturbed by many factors, the patient’s activity cannot be videotaped, and sometimes the relationship between seizures and EEG is not well determined. When epileptiform waves are not recorded on a short course EEG, and patients with high suspicion of epilepsy and patients who are judging whether they can stop their medication after treatment are recommended to have a long course 24-hour dynamic EEG. In addition, the detection rate of epileptic discharges can be significantly improved by combining sleep-evoked and other evoked tests with pterygoid electrode tracing if necessary. The addition of video EEG with video recording can help to determine the relationship between seizures and EEG, and help to detect abnormal EEG signals that are useful for diagnosis.