Aiming at the difficult problem of controlling the peripheral rock of the bottom plate roadway under the disturbance of the working face mining, taking the group of cross-mining bottom plate roadway of 1315 working face of Anju Coal Mine as the research background, we analyzed the distribution characteristics of the roadway peripheral rock of the overburden working face during the process of mining back by numerical simulation and on-site practice, and analyzed the distribution characteristics of the roadway peripheral rock of the overburden working face and the plasticity zone. The research results indicate that when the working face advances to a stop line of 100m, the influence range of the over-supporting pressure is about 35.8m in the horizontal direction and 37.8m in the vertical direction, and the subgrade roadway is affected by the mining according to the size of the distance to the working face successively, which is of process nature. Aiming at the characteristics of 3 upper coal bottom roadway group peripheral rock subject to disturbance and deformation, the proposed "anchor mesh cable + T-type steel belt + metal mesh" joint support technology program, on-site monitoring shows that the support program effectively control the deformation of peripheral rock in the bottom roadway group, to ensure the stable use of the roadway group underneath the face during the period of mining back.