Textured　Ca3Co4O9　ceramics　were　successfully　prepared　by　combination　oxalate　coprecipitation　method　and　spark　plasma　sintering　(SPS)　technique.　Single-phase　Ca3Co4O9　ceramics　with　grain　aligned　can　be　obtained　by　spark　plasma　sintering　at　30　MPa,　850　degrees　C　for　5　min　using　the　coprecipitation　precursor　powders　calcined　at　800　degrees　C　for　6　or　8h.　The　SPS　process　is　effective　sintering　technology　to　obtain　pure　phase　and　textured　Ca3Co4O9　Ceramics.　During　SPS　treatment　the　densification　and　reaction　occur　simultaneously.　The　thermoelectric　properties　of　the　prepared　ceramics　sample　were　investigated　from　100　to　700　degrees　C.　At　700　degrees　C,　the　electrical　resistivity,　Seebeck　coefficient,　thermal　conductivity　and　ZT　of　the　sample　prepared　by　the　powders　calcined　at　800　degrees　C　for　8h　are　7.50　x　10(-5)　Omega　m,　165　mu　VK-1,　1.62　W　m(-1)　K-1,　and　0.22,　respectively.　(C)　2008　Elsevier　B.V.　All　rights　reserved.