Soft broken coal seams are widely distributed in coalmines in China， with the characteristics of high gas content， high pressure， and low permeability. because of the problems such as blowout， hole collapse， difficulty in removal of cuttings， it is difficult to drill in soft broken coal seams and hole accidents happen frequently， with the drilling depth and hole completion rate compromised， leading to blind gas treatment areas. Especially with the increase of coal mining depth， the workload and drilling difficulty in soft broken coal seam continue to increase. In response to the construction requirements for gas extraction drilling in soft brokencoal seams， practical and economical high-speed technologies have been developed， such as high-speed auger drilling technology， medium-pressure air drilling technology， air directional drilling technology， which has solved the problems about removal of cuttings and hole protection， trajectory control and efficient drilling， achieving the long-term utilization of the soft broken coal seam boreholes in the service life. The technology has been successfully promoted and applied in Anhui， Guizhou， Shanxi and other regions， achieved the purpose of high-efficiency and precise extraction， which provides technical guarantee for safe production in mines.