In order to improve the mining efficiency of Pingdingshan No.6 Mine recovery mining face, the recovery hazard was accurately and quickly identified, and the gas control work was streamlined under the basic premise of ensuring the safety compliance. The E9-10-22120 working face in the non-surge area of E9-10 coal seam of this mine was taken as the research object, the reliability of upper protective layer mining on the protection effect of this working face was analyzed from two perspectives of protective layer mining theory and production practice. The gas data measured during the coal tunneling period of the working face was fully utilized to analyze the possible risks during the recovery mining period of the working face. The gas parameters identification method and fault detection method during the recovery mining period were proposed in a targeted manner, and the corresponding gas emission measures and technical measures for crossing faults were designed for possible gas danger area.