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End face caving has always been a major technical problem affecting safe and efficient mining of working face. In this paper, the elastic foundation beam theory is used to establish the differential equation of the end face roof deflection, and the PHASE 2D finite element software is used to establish the numerical model of the end face roof stability, and the influence of coal seam depth, support stiffness, coal body stiffness and other factors on the stability of the backfill mining face end face roof. The results show that :(1) the larger the mining depth or the smaller the hydraulic support stiffness, the more obvious the end face roof subsidence; When the foundation coefficient or elastic modulus of coal seam roof increases, the subsidence of the end face roof decreases, but the influence is limited. Considering the feasibility, improving the stiffness of hydraulic support can effectively control the deformation of working face roof, and reduce the risk of end face roof falling and coal wall sheet wall. (2) When the buried depth of coal seam increases from 200 m to 250 m and 300 m, the plastic zone width and abutment pressure in front of the working face increase significantly, and the maximum subsidence of the direct roof is 61 mm, 78 mm and 96 mm, respectively. (3) When the elastic modulus of coal seam increases from 2 500 MPa to 3 500 MPa and 4 500 MPa, the peak value of abutment pressure in front of working face increases slightly, and so does the width of coal plastic zone in front of working face. The amount of direct roof subsidence decreases slightly. (4) The field observation shows that the support resistance is small under the backfill mining condition, the ore pressure in the working face area is not obvious, and the roof subsidence is effectively controlled. [ABSTRACT FROM AUTHOR]