Abstract: To solve the problem of deformation, damage and difficult maintenance of roadway surrounding rock under the strong subsidence, the 1200 transportation roadway of Shanjiaoshu Coal Mine was take as the research object. By using the research methods of numerical simulation, drilling peep and on-site industrial test, the development characteristics of surrounding rock fissures, the distribution and evolution characteristics of surrounding rock plastic zone, and the variation law of roadway surface displacement for strong subsidence roadway were studied. On this basis, combined with the actual on-site situation, the control technical scheme of "secondary strong bolt injection" was put forward. The results show that the cracks in the surrounding rock of the roadway continue to expand and form a large plastic zone with a range of about 3.00 m after being affected by multiple subsidence influence of the working face. When the coal winning in working face is pushed directly above the roadway, the mining-induced stress will aggravate the damage of roadway surrounding rock, resulting in a sharp increase in the deformation amount of roof, left side and right side. The on-site test shows that after adopting the optimization scheme of roadway support, the average width of the roadway is 5.07 m, which shrinks by 2.5% compared with the origin support, and the average distance of the roof and floor is 3.40 m, which shrinks by 3% compared with the origin support, which indicates the scheme can effectively control the roadway deformation.