Effects　of　ZnO-B2O3　(ZB)　addition　have　been　investigated　on　the　sintering　behavior,　structure　and　microwave　dielectric　properties　of　CaLa4Ti4O15　ceramics.　The　sintering　temperature　of　CaLa4Ti4O15　ceramics　with　a　very　small　amount　of　ZB　addition　such　as　0.2　and　0.5%　is　obviously　reduced　from　1550　to　1375　degrees　C,　and　the　sintering　temperature　range　is　significantly　broadened　to　1350-1450　degrees　C.　With　the　increase　of　ZB　addition,　the　secondary　phases　of　CaLa4Ti5O17　and　LaBO3　are　observed　in　these　ceramics.　Not　only　sintering　behavior　but　also　microwave　dielectric　properties　of　CaLa4Ti4O15　ceramics　have　been　enhanced　by　a　small　amount　of　ZB　addition.　Excellent　microwave　dielectric　properties　of　epsilon　=　42.7,　Qf　=　46.678THz,　(f)　=　-3.5　ppm/degrees　C　are　achieved　for　the　CaLa4Ti4O15　ceramics　with　0.5%　ZB　addition　sintered　at　1375　degrees　C.