Abstract: In order to investigate the negative pressure distribution laws of bedding borehole under the mining stress, based on the theory of borehole cuttings, we analyzed the mining stress distribution laws. Based on the plastic softening property of coal, we build the creep model of the coal body around the borehole; using coal seam gas occurrence and flow correlation theory, we build the gas flow model around the borehole; based on the theory of gas flow in the pipeline, we build the gas flow model in the borehole, and obtain the deformation laws of borehole, the amount of gas pouring into the borehole and the calculation formula of negative pressure in the borehole. Taking the eighth coal mine in Hebi as an example, the negative pressure distribution of 3103 working face bedding borehole is calculated. Research shows that gas drainage from the first day to the fifth day, the pressure difference between orifice and borehole bottom increased from 260 Pa to 3.3 kPa; with the time going on, on the 7th day, the negative pressure value became 0 in the section of borehole; on the 9th day, almost no negative pressure existed in the borehole.