Based on the pseudo-inclined arrangement of the B802 working face of B8 coal seam in a large dip angle, according to the analysis of the filling characteristics and overburden structure characteristics of the goaf of the large dip angle working face, the large dip angle was measured by the actual mining site pressure on the working face. The distribution law of mine pressure in the stope after mining face was studied. The results showed that the pseudo-inclined mining in the large dip angle coal seam was different from the normal working surface layout. The working resistance in the initial pressure-inducing stage was the largest in the middle, larger in the lower part, the smallest in the upper part, and the periodic stepping pressure was the middle step. And the trend of the lower part, the upper part was small. The research results had certain guiding significance for the study of the mining pressure law and the roof optimization support for other working faces of the mine.