Deep　engineering　projects　are　subject　to　complex　environmental　stress　disturbances,　their　safety　and　stability　urgently　need　to　be　studied.　This　study　designed　experiments　on　granite　subjected　to　multi-level　constant　amplitude　cyclic　loading　under　different　confining　pressures,　as　well　as　uniaxial　recompression　experiments　on　pre-damaged　granite.　The　results　indicate　that　there　are　significant　differences　in　the　axial　strain,　radial　strain,　and　volumetric　strain　under　low　and　high　confining　pressures.　When　the　confining　pressure　is　constant,　with　the　increase　of　the　number　of　cyclic　loadings,　the　evolution　trends　of　the　axial　damping　ratio,　radial　damping　ratio,　axial　damping　coefficient,　and　radial　damping　coefficient　of　granite　are　consistent.　The　evolution　pattern　of　the　b-value　for　damaged　granite　is　similar　to　that　of　natural　granite,　showing　a　sudden　drop　during　failure.　The　crack　propagation　in　natural　granite　is　dominated　by　tension-tension-mixed-shear　modes,　while　in　damaged　granite　under　confining　pressures　of　10　and　30 MPa,　the　crack　propagation　is　primarily　tension-tension-tension-tension　modes.　Under　a　confining　pressure　of　50 MPa,　the　crack　propagation　in　damaged　granite　is　dominated　by　tension-tension-mixed-tension　modes,　and　under　80 MPa　confining　pressure,　the　crack　propagation　in　damaged　granite　is　primarily　tension-mixed-shear-mixed　modes.　©　The　Author(s),　under　exclusive　licence　to　Springer　Nature　Switzerland　AG　2025.