Abstract: The directional long borehole segmented hydraulic fracturing technology in coal mines is a commonly used high-efficiency gas extraction technology.In response to the problems of poor coal seam permeability, large amount of gas control drilling engineering, and poor gas extraction effect in Qidong Coal Mine, a study was conducted on the application of roof directional drilling hydraulic fracturing permeability-enhancing high-efficiency gas extraction technology in the Ⅱ7131 working face of Qidong Coal Mine.By analyzing the pump injection pressure curve, fracturing drilling gas extraction parameters, and gas extraction effects in the fractured and non-fractured areas, the effect of hydraulic fracturing permeability-enhancing gas extraction was explored.Adopting the double sealed single card dragging segmented hydraulic fracturing technology, two directional long boreholes on the roof were subjected to segmented hydraulic fracturing construction, with a total of 22 fracturing segments and a maximum pumping pressure of 22.1 MPa.Compared with the gas extraction effect of drilling in the non-fractured area, the gas extraction concentration in the fractured area increased by 2.24 to 2.98 times, and the daily gas extraction purity increased by 1.23 to 1.46 times.The experimental results show that hydraulic fracturing permeability-enhancing measures significantly enhance the permeability of coal seams, effectively improve the gas extraction effect of boreholes in the fracturing area, and preliminarily confirm the applicability of roof directional long borehole segmented hydraulic fracturing permeability-enhancing high-efficiency gas extraction technology in Qidong Coal Mine.