To　improve　the　conductivity　of　CuAlO　2　ceramics,　it　is　necessary　to　meet　the　requirements　of　thermoelectric　devices.　The　delafossite　CuAlO　2　(CAO)　ceramics　was　made　of　Cu　2　O,　Al　2　O　3　and　aluminosilicate　glass　powder　with　traditional　solid　sintering　method.　The　influence　of　sintering　temperature　on　the　conductivity　of　CAO　ceramics　with　aluminum　silicate　glass　was　studied.　Results　show　that　the　density,　grain　size　and　electrical　conductivity　of　CAO　ceramics　increase　gradually　with　increasing　sintering　temperature.　The　apparent　density　and　relative　density　of　CAO　ceramics　reach　maximum,　4.408　g/cm　3　and　95.8%,　respectively,　when　the　sintering　temperature　is　up　to　1　175　℃.　When　the　sintering　temperature　comes　up　to　1　200　℃,　the　grains　of　CAO　ceramics　develop　fully　and　the　shape　of　grains　becomes　polygon.　The　electrical　conductivity　reaches　its　maximum,　2.42　S/m,　which　increases　by　nearly　10　times　as　much　compared　with　1　050　℃.　The　impedance　spectrum　analysis　shows　that　with　increasing　sintering　temperature,　the　improvement　of　the　electrical　conductivity　of　CAO　ceramics　is　mainly　due　to　the　contribution　of　grain　impedance.　©　2019,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.