In　this　study,　the　in-plane　compressive　behavior　of　two-dimensional　plain-woven　carbon　fiber-reinforced　silicon　carbide　composite　(2D-C/SiC)　was　investigated　using　on-　and　off-axis　compression　experiments　under　both　quasi-static　and　dynamic　loading　conditions.　The　failure　mechanisms　were　elucidated　through　in-situ　observations　and　microanalysis-based　methods.　As　the　loading　angle　increased　from　0　to　45°,　stress–strain　curves　exhibited　stronger　nonlinearity,　and　the　in-plane　compressive　strength　decreased　by　50.2%　and　41.1%　under　quasi-static　and　dynamic　loading　conditions,　respectively.　The　failure　mechanism　shifted　from　fiber-dominant　to　interface-　and　matrix-dominant　as　the　loading　angle　increased,　which　was　responsible　for　the　strength　degradation　and　intensified　nonlinearity　in　curves.　A　positive　strain　rate　effect　on　the　in-plane　compressive　strength　attributed　to　the　interface　enhancement　and　multiple　crack　propagation　was　identified.　Additionally,　owing　to　the　competition　between　the　dynamic　strengthening　and　damage　aggravation　effects,　the　strain-rate　sensitivity　factors　increased　with　the　loading　angle　up　to　30°　and　then　decreased　at　45°.　©　2023