Abstract: For the problem of strong pressure appeared in the advance supported roadway on gob side at the extra-thick seam zone during the mining process, this paper uses the FLAC^3D numerical extraction to study abutment pressure distribution of Guojiahe Mine 1305 working face and analyzes the reason of the adjacent empty roadway deformation. The results of the study show that: with the advance of the working face, extra-thick coal seam fully mechanized working face advance abutment pressure peak value and the influence scope gradually increased; the peak is located in front of 10 m to 25 m; the peak stress concentration coefficient is between 1.3 and 2.8; abutment pressure influence range is more than 100 m; effect of concentrated area in front of the working face is 60 m; the working face goaf abutment the pressure influence range increased by 4 times, the stress concentration coefficient increases by 0.8, along with working face adjacent lateral abutment pressure faster growth rate, the peak stress into entity coal distance increases; strong strata pressure of advance supported roadway approaching mined-out area is superimposition influenced by two-way high abutment pressure.