Abstract: In order to solve the problems of large span of cutting hole, complex geological conditions and difficult support of surrounding rock in the large mining height working face of thick coal seams, the deformation law of surrounding rock was studied based on the pressure arch method by taking the cutting hole of the S5205 fully mechanized working face of a mine in Shaanxi Province as the research object.The depth of failure is obtained through theoretical calculation, and the engineering analogy method is used to determine the hole-cutting support scheme, and the support mode of “roof anchor cable+side anchor rod+metal mesh” is adopted.The final convergence of the roof was 27.5 mm, the narrowing of the two sides was 19.2 mm, and the roof did not collapse.The surface displacement of the cutting hole is monitored by the cross measurement point method, and the measured data are similar to the numerical simulation results, indicating that the support scheme can effectively control the stability of the surrounding rock of the cutting hole.