Abstract: In order to control the deformation of surrounding rock of gateway in gently inclined thick coal seam, deformation and failure characteristics of gateway is studied by way of numerical simulation in the engineering background of 201 tailgate in Huagaishan Colliery. The result indicates broken zone and plastic zone of surrounding rock of gateway in gently inclined thick coal seam is large, broken zone mainly focuses on the roof, and shallow surrounding rock is damaged by shear and tensile. Furthermore, spray anchor net cable supporting technology can effectively control the deformation of gateway surrounding rock under the geological conditions. Engineering practice shows that the maximum convergence of gateway with the support of side walls and roof-floor is 102 mm and 124 mm respectively, and there is not bolt or anchor failure in the site, which can provide reference for surrounding rock control of roadway with similar conditions.