Abstract: Xingtai earthquake of 1966 was located in the Shulu fault basin, which is in thecentral region of North Chian Plain. In order to reveal the fine crustal strUcture in theearthquake area, the synthetic exploration of geophysics was conducted as one of the"85" projects of the country. It is first bine for China to use electromagnetic arrayProfiling （EMAP）. The profile crosses through Xingtai Ms7.2 earthquake area. TheEMAP section, after estimating EMAP, impedances, spatial filtering and 2--D invesion,shows clearly the image of the fine crustal structure. The depth from 0 to 4km lookslike simple, while that from 4 to 20km seems to be complex. The focal area is morecomplicated than non--focal area. The range of seismogenic depth is more complicatedthan the other depth range. Sharp changes of the electrical structure of the focal areaindicate the hidden faults with steep angles. The discotinuous position of highconductive layers seems to be seismogenic region. These features are of greatimportance to understand the tectonic background of the studied region, theseismogenic structure, and relahonship between deep and shallow structures.