The　development　of　molecular　wires,　the　key　component　of　molecular　devices　and　the　bridge　and　link　between　electrodes,　is　expected　to　solve　the　problem　of　future　electronic　devices　that　are　reaching　their　theoretical　size　limit　and　cannot　meet　the　higher　demands　of　the　population.　After　a　long　period　of　development,　molecular　wires　are　no　longer　limited　to　the　basic　stages　of　synthesis　and　modification.　In　recent　years,　the　exploration　of　the　practical　functions　of　molecular　wires　has　been　a　major　focus　of　research　in　molecular　electronics.　Ferrocene　has　been　widely　used　in　the　fields　of　nonlinear　optics　and　molecular　electronics　due　to　its　excellent　physical　and　chemical　properties.　In　the　past　decade　or　so,　the　introduction　of　ferrocene　groups　has　led　to　the　construction　of　a　variety　of　novel　molecular　wires,　which　have　significantly　contributed　to　the　basic　research　of　single-molecule　devices.　The　molecular　wires　based　on　ferrocene　groups　have　several　advantages　over　conventional　pure　organic　molecular　wires,　including　(1)　reduced　pi-pi　stacking　between　molecules,　(2)　adjustable　molecular　lengths　and　flexibility,　(3)　reduced　front-line　molecular　orbital　energy　differences,　which　improves　the　electron　transfer　capability　of　molecular　wires,　and　(4)　inherently　good　conductive　properties,　which　allow　direct　interaction　with　gold　electrodes　to　form　single-molecule　junction.　However,　most　of　the　research　on　ferrocene-based　molecular　wires　has　focused　on　their　1,1＇-substituted　derivatives,　while　their　1,3-substituted　derivatives　have　not　received　much　attention　due　to　the　difficulty　of　their　synthesis.　Based　on　the　structural　properties　of　the　molecules,　metallocene　molecular　wires　are　classified　into　two　types:　pi-conjugated　and　non　pi-conjugated.　The　work　on　the　electron　transport　properties　of　ferrocene-containing　single-molecule　junctions　in　the　last　decade　is　summarized　in　terms　of　the　conformational　relationships　of　the　molecules,　in　the　hope　of　providing　a　reference　for　future　research　on　ferrocene　molecular　wires.