EEG stereotactic localization is a method to precisely locate the foci of epilepsy origin by performing multiple examination means and using computer technology post-processing to establish a unified coordinate system of temporal and spatial examination results with EEG information as the core. The main components include: spatial examination means (MRI, SPECT, PET, etc., which require high resolution and contain as much complete cranial information as possible); temporal examination means (dynamic EEG, video EEG, etc., which require multilead, long time and high quality EEG signal acquisition); and the establishment of coordinate system (precise coordinate system of scalp electrodes) with various image processing and fusion software. This is used to accurately localize the foci of epilepsy origin.