Abstract: In order to study the isobaric principle of the mining stage in the shallow buried near-distance coal seam, the mining stage of the 20314 working face in Gaojialiang Coal Mine is taken as the engineering background. Firstly, the key layer location discrimination method is used to determine that the fine-grained sandstone at the interval of 5 m on the upper coal seam of 2-2 is a sub-key layer, and the coarse-grained sandstone at the interval of 32 m is the main key layer. The fault location of overlying strata was determined by layer separation S_n. Then, the overlying rock movement laws of the working face after passing through without stop-mining isobaric pressure or adopting isobaric pressure technology are analyzed. Through theoretical calculation, the 6.6 m from the working face to the retracement channel is determined to be the best isobaric position of stoping, and the field test is carried out at the end stage of 20314 working face, and the retracement work is completed safely and smoothly.