Abstract: In order to solve the support difficult problem of return air roadway in II66 mining area near D27 fault under mining, the numerical simulation software of FLAC^2D was applied. According to the deformation law of roadway and the influencing factors of stability, the paper provided the support technology of high strength bolt-mesh-cable support. The result showed that the mining-induced stress would begin to influence the roadway when the distance was 80 m between coal face and roadway, and with the promoting of the coal face, the deformation rate increased gradually. Asymmetric stress field appeared near the fault after the mining activated the fault, and which led to the inhomogeneous deformation of roadway. The biggest roadway inhomogeneous deformation coefficient is 4.6, which appears on the laneway's side near the fault.