The　Sr　doped　(Ca1-xSrx)(12)Al14O33[(C1-xSx)12A7]　(x　=　0,　0.01,　0.02,　0.03,　0.04,　0.05)　polycrystals　were　successfully　prepared　by　the　melt-solidification　combining　spark　plasma　sintering　(SPS)　process.　The　electrides　were　obtained　by　thermal　treatment　with　Ti　particles　at　1100　degrees　C　for　20h.　The　electrical　properties　and　electronic　structure　were　systematically　studied.　The　free　oxygen　ions　of　Sr　doped　samples　were　easier　substituted　by　electrons.　(Ca0.96Sr0.04)(12)Al14O33:e-　sample　possesses　the　highest　electrical　conductivity　at　room　temperature　(RT)　(approximate　to　1136S/cm)　and　electron　concentration　[approximate　to(2.13　+/-　0.11)　x　10(21)cm(-3)]　was　obtained,　which　was　above　one　magnitude　higher　than　that　of　nondoped　sample.　The　calculated　electronic　structure　showed　that　Sr-doping　increased　the　density　of　state　near　the　Fermi　level　of　(C0.96S0.04)12A7:e-.　The　level　of　frame　conduction　band　(FCB)　decreased　compared　to　Ca12Al14O33:e-.The　large　density　of　state　of　(C0.96S0.04)12A7:e-　was　mainly　contributed　by　Sr　4p,5s,　Ca　3d,4s　and　Al　3p.