The　[Ca24Al28O64](4+):　4e(-)　(C(12)A(7)　:　e(-))　electride　composed　of　densely　packed,　subnanometer-sized　cages.　This　unique　structure　makes　it　possess　distinctive　applications　in　fields　of　electronic　emission,　superconductor,　electrochemical　reaction.　In　this　paper,　we　explore　a　new　method　to　prepare　the　bulk　of　C(12)A(7)　:　e(-)　electride.　The　following　areare　systematically　studied　in　this　work.　1)　the　condition　of　preparing　bulk　of　C(12)A(7)　:　e(-)　electride　by　solid　reaction　combining　spark　plasma　sintering　and　reduction　with　Ti　particles　at　high　temperature,　CaCO3　and　A　l(2)O(3)　powders　are　used　as　raw　materials;　2)　the　first　principle　calculations　of　band　structure　and　density　of　states　of　the　C(12)A(7)　:　e(-)　electride;　3)　the　analysis　of　the　electrical　transport　properties　of　the　C(12)A(7)　:　e(-)　electride.　The　bulk　of　C(12)A(7)　:　e(-)　electride　is　successfully　prepared　by　this　method,　so　the　results　show　that　the　bulk　of　C12A　7　:　e　electrode　with　the　electron　concentration　10(18)　-　10(20)　cm(3)　is　synthesized　at　1100　degrees　C　and　a　vacuum　pressure　of　10(5)　Pa　for　10(-30)　h.　In　the　process　of　Ti　reduction,　Ti　particles　become　evaporated　and　deposit　on　the　surface　of　C(12)A(7),　the　free　O-2　atom　in　the　cages　diffuse　to　the　sample　surface,　the　Ti　vapor　reacts　with　the　O-2,　forming　a　loose　TiOx　layer.　In　order　to　maintain　electrical　neutrality,　the　electrons　of　the　free　O-2　atom　leave　from　the　cages,　forming　the　C(12)A(7)　:　e(-)electride.　In　addition,　the　loose　TiOx　layer　also　provides　a　channel　for　the　diffusion　of　the　O-2　atoms　in　the　cage,　ensuring　the　continuation　of　the　reduction　reaction.　The　calculated　band　structure　and　density　of　states　of　the　bulk　C(12)A(7)　:　e(-)　electride　show　that　when　electrons　replace　the　O-2　atoms　in　the　cage,　the　Fermi　level　of　C(12)A(7)　:　e(-)　crosses　over　the　cage　conduction　band　(CCB).　Thus　the　free　movement　of　the　electron　is　the　main　reason　for　the　insulator　C(12)A(7)　to　convert　into　conductor　C(12)A(7)　:　e(-).　At　the　same　time　the　electrons　near　the　Fermi　level　in　the　cages　are　easy　to　jump　from　the　CCB　to　the　frame　conduction　band　(FCB).　Combination　of　the　above　experimental　results　suggests　that　the　electrons　in　cages　are　easier　to　escape　to　vacuum　under　the　action　of　electric　field　or　thermal　field,　which　is　the　main　reason　for　low　work　function　of　C(12)A(7)　:　e(-).　This　way　provides　an　new　approach　to　the　realization　of　the　insulator　C(12)A(7)　converting　into　C(12)A(7)　:　e(-)　electride.　And　the　C(12)A(7)　:　e(-)　is　a　good　electronic　emission　material　due　to　low　work　function,　low　working　temperature,　and　highly　anti-poisoning　ability,　so　this　method　of　preparing　bulk　C(12)A(7)　:　e(-)　electride　provides　a　good　new　way　to　synthesize　a　new　electronic　emission　material.