Abstract: The paper make a design and application for the two level mining at the same time with Yangquan No.9 and No.15 coal seam conditions and gas characteristics. And according to the characteristics of working face, confirm the gas drainage roadway layout, drilling technical parameters and goaf gas drainage scheme. By practical application, No.9 coal seam gas drainage achieved the rate of 42%, No.15 coal seam gas drainage achieved the rate of 76.5%, completely meet the requirements of the working face gas drainage. The project has obtained the satisfactory result of extraction.