Abstract: Aiming at the problem that most of the research on Baiyang Well Field focuses on the geological aspects of the mine,and the research on the aspect of well field geological genesis is relatively weak,which is not conducive to the smooth development of the next step coal resources exploration work.Utilizing the method and principle of sedimentary facies analysis,a systematic sedimentary facies analysis is conducted on the borehole sections of typical coal bearing rock series.The results indicate that the sedimentary environment of the coal bearing rock series in the area,from bottom to top,there are lagoon-tidal flat,delta plain,and lagoon-tidal flat.The delta plain has the best coal accumulation action and deposits the main mineable coal seams M2,M4,M5,and M9 of the area;Except for the ancient geographical conditions,ancient plants,ancient climate,and ancient structural conditions are also significant ore-controlling factors for coal accumulation,which jointly control the occurrence of coal accumulation action and the preservation of coal resources.The research results can provide corresponding theoretical guidance for the resource exploration of next step coal in the area.