Abstract: According to the situation of influencing factors variety of mine pressure behavior degree appeared at working face under the hard and thick seams, the combination of theoretical analysis, numerical simulation and field measurement, the hard thick layers of rock mass stress expression in different support conditions is set up; the influence of hard thick coal seam buried depth, thickness of strata and its horizon on the rock pressure is analyzed; the influence degree of hard thick strata horizon on the mine pressure behavior is studied. Research shows that the hard thick rock strata for the shallow buried coal seam working face behavior degree to the underground pressure has the greatest influence, followed the hard thick strata thickness, buried depth of coal seam of a smaller effect; the pressure is intense at working face when the hard thick layers of coal seam distance and the coal seam buried depth ratio λ is less than 0.35; when λ is more than 0.35, the compressive strength is small.