Steel-concrete　composite　bridges　are　a　type　of　bridge　structure　that　connects　steel　beam　and　concrete　bridge　deck　through　shear　connectors.　They　consider　the　cooperation　of　steel　and　concrete.　Shear　connectors　are　important　force　transmission　components.　The　behavior　reliability　of　shear　connectors　is　the　basis　for　the　coordinated　working　of　steel　beams　and　concrete　bridge　decks.　To　further　clarify　the　configurations　and　behavior　of　shear　connectors　for　steel-concrete　composite　bridges,　the　study　of　shear　connectors　in　steel-concrete　composite　bridges　was　systematically　sorted　out.　The　types,　configurations,　and　shear　mechanisms　of　common　shear　connectors　were　first　introduced.　Then,　the　study　of　shear　connectors　with　high-performance　materials　was　summarized.　The　force　mechanism　of　shear　connectors　was　clarified.　The　analysis　models　of　mechanical　performance　for　shear　connectors　and　calculation　formulas　of　shear　resistance　were　summarized　in　detail.　Finally,　the　research　trend　of　shear　connectors　in　steel-concrete　composite　bridges　was　discussed.　The　study　of　shear　connectors　with　high-performance　materials　in　prefabricated　assembled　bridge　decks　needs　to　be　conducted,　realizing　accelerated　bridge　construction　and　low-carbon　sustainable　development.　©　2024　Beijing　University　of　Technology.　All　rights　reserved.