Abstract: In order to control the gas flow of the working surface, improve the gas extraction capacity of the mining-out area, this paper takes Wangjialing Mine 12302 working surface as a test object, and the evolution law of mining-induced fractures in overburden rock after coal mining is studied. According to the actual pumping effect of the mine, the quantitative relationship of drilling layer and spacing under different daily advancing speed is studied, and the design of high drilling and the pumping effect are investigated. The development range and number of cracks in overburden gradually increased with the advance of working face. After several times of pressure, obvious compaction area was formed in the middle of overburden in goaf. In the gas rich area, the height of overburden caving zone was 28.2 m and the height of fracture zone was 118.6 m within the range of 20-50 m in inlet and return air roadway and 25-50 m above the roof of coal seam. The dominant horizon and spacing of drilling holes at different daily advancing speeds conform to a linear equation y=ax±b. After the high-position drilling designed according to the research results is implemented, the pure amount of gas extraction from contrast holes is lower than the other four holes, and the maximum pure amount of gas extraction from single hole is 51% higher than that from other drilling fields. The average gas extraction rate of high directional holes is 68%, which effectively improves the effect of gas extraction from working face and controls the gas emission from working face. The maximum gas volume fraction of the upper corner and the return flow is kept below 0.8% during the extraction period, which can ensure the safe production of the mine.