The　intricate　woven　structure　of　two-dimensional　woven　carbon　fiber　-reinforced　silicon　carbide　(2D　C/SiC)　poses　challenges　to　the　investigation　of　damage　failure　mechanisms　and　the　prediction　of　material　performance,　thereby　limiting　its　further　application　in　aerospace　engineering.　In　this　work,　static/dynamic　short　beam　shear　tests　with　different　densities　of　2D　C/SiC　were　carried　out.　It　was　observed　that　high　-density　specimens　with　fewer　microporous　defects　exhibited　better　strength　characteristics　than　those　with　lower　density.　Specifically,　the　shear　strength　of　2D　C/SiC　with　a　density　of　2.07　g/cm　3　increased　by　18.6%　compared　to　that　of　the　specimen　with　a　density　of　1.94　g/cm　3　.　The　transient　hysteresis　strengthening　effect　of　materials　at　high　strain　rates　was　discovered　through　cross　scale　research　methods.　It　was　found　that　deformation　coordination　ability　of　2D　C/SiC　under　dynamic　loading　was　weaker　than　that　under　quasi　-static　conditions.　Moreover,　the　deformation　hysteresis　in　temporal　and　spatial　distributions　induced　significant　fiber　plucking,　further　accelerating　dislocation　movement　within　the　internal　lattice　and　thereby　enhancing　strength　of　the　material.　The　failure　path　of　materials　often　follows　the　direction　of　pore　defects,　and　stress　concentration　leads　to　cracking　behavior　of　fiber　bundles.　Furthermore,　microcracks　within　the　matrix,　caused　by　residual　stress,　resulted　in　localized　regions　of　reduced　strength.　This　induced　the　matrix　cracking　failure　with　further　crack　expansion　within　the　material　structure　under　external　loads.　To　provide　technical　references　for　practical　engineering　applications　and　design,　a　realistic　and　effective　finite　element　prediction　model　was　developed　for　2D　C/SiC　composites　based　on　their　structural　characteristics.