Fiber-Reinforced　Cementitious　Composites　(FRCC)　have　gained　significant　attention　in　engineering　applications　due　to　their　superior　mechanical　properties　and　toughness,　particularly　under　high　strain　rate　conditions.　This　study　performed　dynamic　tensile　tests　on　FRCC　at　high　strain　rates　(35-110　s-1)　using　a　Split　Hopkinson　Tensile　Bar　(SHTB)　apparatus.　Additionally,　a　novel　Peridynamic　(PD)　model　was　developed　for　the　SHTB　and　FRCC　system,　leveraging　the　advanced　capabilities　of　the　emerging　PD　theory.　The　study　compared　and　analyzed　dynamic　tensile　strength,　ultimate　tensile　strain,　strain　rate　effects,　failure　modes,　and　crack　development　in　FRCC　with　different　fiber　ratios　at　various　high　strain　rates,　using　both　experimental　data　and　PD　simulations.　The　results　show　that　the　PD-SHTB-FRCC　dynamic　model　developed　in　this　study　exhibits　high　consistency　between　numerical　simulations　and　experimental　findings,　effectively　capturing　the　processes　of　crack　initiation,　propagation,　and　complete　failure　in　FRCC　specimens.　The　dynamic　tensile　properties　of　FRCC　improve　significantly　with　increased　strain　rates,　with　polyethylene　(PE)　fibers　providing　superior　reinforcement　compared　to　steel　fibers.　Notably,　the　dynamic　tensile　strength,　peak　tensile　stress,　and　ultimate　tensile　strain　of　FRCC　increase　significantly　with　rising　strain　rates,　with　specimens　containing　higher　PE　fiber　content　showing　a　more　pronounced　enhancement　effect.　For　strain　rates　between　42.6　s-1　and　76.1　s-1,　considering　dynamic　tensile　strength,　ultimate　tensile　strain,　and　peak　tensile　stress,　the　optimal　combination　for　resisting　dynamic　tensile　loads　was　1.5　%　PE　fibers　and　0.5　%　steel　fibers.　At　a　strain　rate　of　99.8　s-1,　a　2　%　PE　fiber　ratio　alone　provided　the　best　performance.