Microwave　dielectric　ceramics　of　CaLa4Ti4O15　were　prepared　by　the　solid-state　reaction　method.　The　influence　of　the　calcining　temperature　on　the　sintering　behavior　and　microwave　dielectric　properties　was　investigated.　For　the　specimen　calcined　at　1200C,　CaTiO3,　La2Ti2O7　and　La2TiO5　mixed　phases　were　observed　in　addition　to　the　CaLa4Ti4O15　phase,　while　the　hexagonal　perovskite　single　phase　was　achieved　for　the　CaLa4Ti4O15　powders　calcined　at　1300C　or　1400C.　CaLa4Ti4O15　ceramics　were　sintered　well　with　high　relative　density　of　about　97%.　On　the　other　hand,　the　ceramics　had　a　high　mechanical　quality　factor　plus　resonant　frequency　(Q　×　f)　value　and　near　zero　temperature　coefficient　of　resonant　frequency　(τf).　The　CaLa4Ti4O15　ceramics　sintered　at　1550C　exhibited　excellent　microwave　dielectric　properties　as　follows:　relative　dielectric　constant　Εr　=45.1,　Q　×　f　=46　087　GHz,　τf　=　-14.1　×　10-6/°C　and　Εr　=45.9,　Q　×　f　=48　871　GHz,　τf　=　-14.4　×　10-6/°C　for　the　specimens　calcined　at　1200C　and　1300C,　respectively.