The　burgeoning　field　of　conjugated　microporous　polymers　(CMPs)　has　generated　widespread　interest　due　to　their　potential　as　photocatalysts　for　hydrogen　production　from　water.　Nevertheless,　their　photocatalytic　performance　is　sometimes　hindered　by　inadequate　charge　separation　and　transfer,　coupled　with　rapid　charge　recombination.　Herein,　a　strategy　to　enhance　photocatalytic　performance　via　the　customization　of　pi-bridges　through　the　modulation　of　heteroatoms　in　a　series　of　donor-pi-acceptor　(D-pi-A)　CMPs　is　proposed.　This　affords　optimized　energy　levels　and　improved　charge　separation　and　transfer,　thus　boosting　photocatalytic　efficiency.　Among　various　heteroatom　substitutions,　S-doped　CMP　(10　mg)　demonstrates　the　highest　photocatalytic　hydrogen　evolution　rate　of　203　mu　mol　h(-1)　(AQY(450nm)　=　7.4%)　under　visible　light　irradiation.　Subsequent　experimental　analysis　reveals　its　superior　photocatalytic　performance　can　be　largely　related　to　its　minimized　exciton　binding　energy,　facilitated　charge　transfer　efficiency,　and　impeded　charge　recombination　among　these　heteroatom-doped　D-pi-A　CMPs.　This　research　paves　the　way　for　the　rational　design　and　modification　of　organic　semiconductors　for　advanced　solar-driven　photocatalysis　by　promoting　charge　separation　and　transfer.