In order to ensure the long-term safety and stability of +980 m level auxiliary transportation rock cross-cut roadway in Jinneng Coal Industry, the failure characteristics, mechanism and reasonable support method of roadway were studied by means of field investigation, measurement and theoretical analysis. The research showed that under the condition of the original shed support method, the development range of the surrounding rock loose circle reached 2.4 m, and the deformation and failure of the roadway was serious. It was more reasonable to adopt the combined support technology of anchor net and cable spray. The detailed roof aquifer drainage technical measures and bolt-mesh-cable-shotcrete support scheme were designed. The practice showed that the bolt and anchor cable played a good active support role, and the deformation and failure of surrounding rock were effectively controlled.