Abstract: In order to solve the problem of deformation and instability of surrounding rock of gob-side entry retaining roadway in secondary high strength mining, taking 52606 large mining height working face of Daliuta Coal Mine as the engineering background, the deformation law of surrounding rock of gob-side entry retaining roadway in secondary high strength mining is studied by means of numerical simulation, theoretical analysis and field measurement. The mechanical model of surrounding rock of gob-side entry retaining roadway is constructed, and the stress characteristics of surrounding rock of gob-side entry retaining roadway are analyzed. Combined with the actual geological conditions of 52605 and 52606 working faces, FLAC^3D is used to simulate the stress change of overlying strata in gob-side entry retaining during secondary mining. In the auxiliary transportation roadway of 52606 working face, anchor bolt and anchor cable Uloka stress sensor are arranged. Combined with the deformation monitoring data of surrounding rock on site, the reinforcement support scheme of roadway shoulder angle cable-stayed anchor cable + “anchor bolt + anchor cable” is put forward. The results show that the initial stress balance of overburden rock is destroyed during the first mining, and the stress is transmitted to the surrounding rock of roadway on both sides of goaf. During the secondary mining, the overlying strata on the side of the coal body moves to the side of the filling body, resulting in the increase of the bending moment of the filling body, which in turn causes the deformation and instability of the overlying surrounding rock of the gob-side entry retaining roadway. When the working face is advanced to about 50 m in front of the shrinkage face, the tail triangle area is subjected to stress concentration, and the maximum stress reaches 41 MPa, which exceeds the bearing limit of the flexible formwork concrete wall, and the roof is deformed and unstable. By adjusting the angle between the cable-stayed anchor cable and the normal line of the roadway, the amount of roof separation is controlled, and the stability of the surrounding rock is improved with the reinforcement support of “bolt + anchor cable + W steel belt”. The displacement of the roof and floor is controlled at 80-150 mm, which ensures the stability of the surrounding rock of the gob-side entry retaining roadway. This scheme can provide an effective reference for the reinforcement support of gob-side entry retaining in the continuous working face of the panel area and the research on the deformation law of surrounding rock of gob-side entry retaining under similar working conditions.