Abstract: In view of the problems of high gas content, poor gas permeability and great tendency of outburst in continuous uncovering of coal seam group in main coal seams of Xishangzhuang Mine Field, adopting permeability enhancement technology of large volume hydraulic fracturing in ground wells, based on the extension law of main fracture, sliced fracturing of perforation and sand filling were successively carried out for each minable coal seam, and compound extraction was carried out after the completion of fracturing. The location selection of fracturing wells, the design of fracturing parameters and the construction process were mainly introduced. The practice results show that after implementing the permeability enhanced technology of hydraulic fracturing of ground well, the high permeability zone is formed in a certain range of fracturing wells, the development of fractures and the increase of gas permeability coefficient of coal seams in the high permeability area greatly improve the extraction effect; the main mining No. 3 coal seam is mined safely and efficiently, and the mining period is shortened to 10 d. It has accumulated successful experience for uncovering coal of similar shaft.