Delafossite　CuAlO2　(CAO)　ceramics　were　fabricated　by　the　solid-state　route,　using　aluminosilicate　glass　powders　as　a　sintering　aid　to　improve　the　sintering　ability　and　electrical　conductivity,　at　1473K　for　3hours.　The　CAO　ceramics　with　glass　addition　obviously　enhanced　bulk　density,　grain　size,　and　electrical　conductivity.　It　is　found　that　the　conductivity　of　CAO　ceramics　increased　with　the　increase　in　glass　content　under　9.5%,　whereas　it　was　over　9.5%,　the　conductivity　went　down.　The　glass　coming　up　to　9.5%　increased　the　sintering　ability　and　the　electrical　conductivity　which　was　increased　by　one　order　of　magnitude,　thus　increasing　the　figure　of　merit　ZT　for　thermoelectric　performance　of　our　CAO　added　with　9.5%　glass　up　to　9.82x10(-3)　at　773K,　which　is　a　high　value　among　the　CAO　ceramics.　Besides,　the　impedance　analysis　shows　that　the　impedance　of　the　CAO　ceramic　was　controlled　by　its　grain　boundary.