Abstract: To solve the problems of low seam permeability, poor drainage effect after the implementation of a single through beds hole and hydraulic fracturing technology, lack of regional outburst prevention measures implementation and causing larger blank space, high pressure hydraulic fracturing permeability increasing technology is carried out in 5^# coal seam of 34 zone -350 m west drainage roadway. A suitable hydraulic fracturing process for Yutianbao Coal Mine is determined; the parameter ps of the injection pressure theoretical calculation formula should be about 10% to 15 % of the maximum pumping pressure. Hydraulic fracturing effect analysis showed that within the effective impact range of hydraulic fracturing, the average moisture content of coal seam is 2.15 times that of the original, the average permeability coefficient is 112 times that of the original, the average gas drainage concentration is 2.3 times that of the original, the average gas drainage scalar is 3.9 times that of the original. According to the comprehensive analysis of gas drainage concentration, gas drainage scalar, moisture content, permeability coefficient, as well as other parameters, the effective scope of the single-hole hydraulic fracturing along the trend of the coal seam is about 50 meters.