Abstract: Aiming at the situations of high gas pressure and content, soft coal body, low permeability as well as serious borehole outburst and nonideal gas drainage effect in cross-seam drillings of Pingbao Company Ⅱ_1-2coal seam, the paper has been investigated suitable technological process and parameters for this mine based on theory analysis, on-site experiment of hydraulic flushing in borehole.