The　realization　of　high　figure　of　merit　for　thermoelectric　materials　relies　on　modulating　the　electrical　and　thermal　transport　at　the　same　time.　In　this　work,　the　Ca3Co4O9+delta,　oxide　based　material　specimens　with　regulated　carrier　transport,　phonon　transport　as　well　as　enhanced　figure　of　merit　are　prepared　through　barium　and　praseodymium　dual　doping　and　spark　plasma　sintering.　The　microstructures,　textures　as　well　as　the　thermoelectric　performances　are　successfully　tuned　by　dual　doping　and　preparation　procedure　adjustment.　The　bulk　specimen　shows　the　largest　figure　of　merit　0.31　at　973　K　for　Ca2.8B-a(0.1)Pr(0.1)Co(4)O(9+delta)　bulk　specimen　due　to　improved　power　factor　and　suppressed　thermal　conductivity.　The　figure　of　merit　value　is　very　much　higher　than　that　of　the　comparing　specimen,　and　the　combining　effect　of　dual　doping　is　indeed　positive　for　optimizing　the　thermoelectric　performance　for　the　titled　oxide　materials.　(C)　2016　Elsevier　B.V.　All　rights　reserved.