In　order　to　propose　a　shear　capacity　calculation　method　for　FRP-RC　deep　flexural　members　that　can　consider　multiple　factors　and　the　size　effect,　a　total　of　316　experimental　data　on　the　shear　capacity　of　FRP-RC　deep　flexural　members　were　collected　from　much　relevant　literature　at　home　and　abroad.　The　gray　correlation　method　was　used　to　analyze　the　importance　of　relevant　influencing　factors　(i.　e.,　cross-sectional　height,　shear-span　ratio,　span-height　ratio,　reinforcement　ratio,　etc.)　on　the　shear　capacity　of　FRP-RC　deep　flexural　members,　and　the　influence　of　each　factor　on　the　shear　capacity　was　quantitatively　revealed.　The　results　indicate　that　cross-sectional　height,　longitudinal　reinforcement　ratio,　shear-span　ratio,　span-height　ratio,　and　web　reinforcement　ratio　are　important　factors　for　the　shear　capacity　of　FRP-RC　deep　flexural　members.　The　correction　factor　of　relevant　influencing　factors　(i.　e.,　cross-sectional　height,　shear-span　ratio,　span-height　ratio,　reinforcement　ratio,　etc.)　and　the　safety　factor　of　web　reinforcement　were　proposed　through　the　regression　analysis.　The　calculation　method　of　shear　capacity　of　FRP-RC　deep　flexural　members　that　can　consider　the　influence　of　multiple　factors　was　established.　And　the　rationality　and　accuracy　of　the　calculation　formula　were　verified　by　comparing　the　calculated　values　with　the　experimental　values.　©　2023　Science　Press.　All　rights　reserved.