Abstract: Through the deformation failure mechanism study of the -650 m level track cross-cut in Linnancang Coal Mine, the roadway deformation and failure of surrounding rock is mainly due to the composition of clay minerals, the structural instability in supporting region. On this basis, the study designs a backfilling support way. Through the FLAC^3D simulation calculation, the supporting method can well control the broken zone of roadway surrounding rock, the stress field and displacement field tends to equalization, and can well control large deformation of the broken surrounding rock.