Gallium-doped　zinc　oxide　ceramics　with　high　density　were　sintered　by　conventional　solid-state　reaction　method.　The　phase,　fracture　morphology,　conductive　properties　and　density　of　the　samples　were　tested　by　XRD,　SEM,　Hall　testing　and　Archimedes　method,　respectively.　Increasing　of　the　sintering　temp　and　sintering　time　does　not　affect　the　characteristic　peaks　belong　to　lead-zinc　mine　structure　of　zinc　oxide　polycrystal,　but　it　has　a　great　influence　on　the　samples＇　density　and　the　size　of　grains.　The　density　first　increases　with　heat　preservation　temp　and　hour　then　decreases,　the　maximum　value　obtained　is　5.54　g　cm-3.　Micrographs　clearly　shown　that　increase　the　heating　temp　is　beneficial　to　the　growth　of　the　grain.　The　measured　results　have　shown　that　the　optimum　sintering　conditions　of　Ga-doped　zinc　ceramics　are　a　sintering　temperature　of　1325°C　and　a　sintering　time　of　4　hours.　The　whole　process　indicates　that　the　lowest　resistivity　of　Ga-doped　zinc　samples　is　2.282　×　10-3　Ω·cm.　©　W.　S.　Maney　&　Son　Ltd　2015.