Based on sharp inclined super thick coal seam adopting level layering top coal mining, roadway along coal seam roof and floor, existing in soft layer of coal body, with features of compound soft coal roadway, the ventilation roadway was totally under goaf, with large ground pressure and big deformation. Based on the observation, test and evaluation of return air roadway and support damage, the shaping and maintenance methods of roadway adopting anchor net support, the optimization and specification of the support materials and technology parameters during basic support and deformation part reinforcement provided reference for support design and construction in similar roadway.