The　complexity　and　high　frequency　of　fractures　in　rock　masses　make　discrete　fracture　network　(DFN)　models　suffer　from　burdensome　computational　consumption　when　every　fracture　is　explicitly　simulated.　Meanwhile,　the　uncertainty　in　the　spatial　distribution　of　fractures　also　leads　to　the　unnecessary　explicit　simulation　of　small　fractures　to　achieve　more　accurate　results.　In　this　study,　an　equivalent　discontinuum　analysis　(EDA)　method　proposed　to　deal　with　complexly　fractured　rock　masses　in　the　deep　underground.　An　equivalent　discrete　fracture　network　(E-DFN)　with　simple　geometric　configurations　is　extracted　based　on　a　defined　significance　index　of　fractures.　The　influence　of　fractures　that　are　neglected　in　E-DFNs　is　superposed　on　the　remaining　fractures　by　reassigning　their　material　properties.　Using　the　proposed　EDA　method,　the　anisotropy　of　the　deformation　modulus　of　the　original　DFN　model　is　well　represented　by　the　E-DFN　models.　Compared　with　the　equivalent　continuum　and　discontinuum　models,　the　E-DFN　models　with　reassigned　fracture　properties　have　a　better　po-tential　for　maintaining　stress　variability　and　displacement　discontinuity　in　rock　masses.