The　development　of　semiconducting　materials　for　photoredox　catalysis　holds　great　promise　for　sustainable　utilization　of　solar　energy.　Olefin-linked　covalent　organic　frameworks　(COFs),　which　are　built　by　linking　organic　structs　into　crystalline　frameworks　through　C=C　bonds,　have　attracted　tremendous　attention　in　photocatalysis　due　to　their　saliant　advantages　such　as　extended　pi-conjugation,　permanent　porosity,　exceptional　chemical　stability,　light-harvesting　and　charge　separation　abilities.　This　review　offers　a　comprehensive　overview　of　recent　new　advances　toward　the　development　of　olefin-linked　COFs　and　their　uses　as　artificial　platforms　for　photocatalytic　applications,　like　hydrogen　evolution,　carbon　dioxide　reduction　and　organic　transformations.　Structural　design　strategies,　preparation　methods　and　structure-function　relationships　in　various　photoredox　reactions　are　summarized,　which　is　accompanied　by　various　approaches　to　boost　their　catalytic　performance.　The　challenges　and　future　prospectives　are　further　discussed.