Abstract: Aiming at the problems of poor support effect and serious deformation and damage of surrounding rock in mining roadway under the action of deep mining stress,taking 8301 working face return air way of coking coal mine 303 panel area as the research object,we established the numerical model of FLAC^3D,and got the stress,deformation and damage law of the surrounding rock of the roadway of 8301 working face of 303 panel area of coking coal mine by comparing the designed onelevel support with the three-level support scheme. The key parameters of multi-level support were further determined,and field test monitoring was carried out. The results show that after multi-level support,the degree of deformation of the roadway surrounding rock is reduced; the displacement of the two sides is reduced by about 40%, the displacement of the roof and floor is decreased by about 30%, and the plastic zone of the roadway is reduced by about 75% ; and the peak value of concentrated stress is reduced from 98. 7 MPa to 95. 8 MPa. Overall,the integrity,stability and support effect of the surrounding rock are better.