Achieving　highly　efficient　spin　injection　has　been　a　challenging　problem　for　a　long　time　in　spin　logic　devices.　The　chiral-induced　spin　selectivity　(CISS)　effect　could　induce　spin　polarization　of　electron　transmission　by　chiral　structure,　providing　a　promising　solution　to　resolve　the　above　bottleneck.　In　this　work,　the　significant　CISS　effect　by　self-assembled　chiral　organic　molecules　with　helical　structure　was　achieved　on　the　copper　(Cu)　substrate　covered　with　gold　(Au)　layer.　We　find　that　the　spin　polarization　induced　by　the　chiral　molecules　is　more　than　80%.　Serving　as　an　ultra　efficient　spin　filter,　the　chiral　organic　molecules　is　demonstrated　to　be　an　effective　way　to　generate　pure　spin　currents　and　achieve　highly　efficient　spin　injection　without　ferromagnetic　electrodes　or　external　magnetic　field.　Based　on　these　properties,　a　CISS　based　reconfigurable　logic　device　is　proposed.　Due　to　the　high　spin　injection　efficiency,　this　CISS　based　device　can　realize　6　different　logic　operations　with　low　energy　consumption　(1.2　pJ)　and　high　speed　(3.6　ns).