Dipping　SiC　kiln　furniture　Into　Ca3(PO4)2　saturated　solution　is　benefiticial　to　its　crystalline　structure　change　and　its　properties.　It　helped　the　SiC　structure　change　from　low-temperature　stable　type　to　high-temperature　stable　type.　The　percentage　of　α-type　SiC　increased　with　the　dipping　times　and　it　reached　the　highest　(81.1%)　after　4　times(once　10　min).　The　properties　of　SiC　also　improved　with　the　dipping　times.　The　apparent　porosity　and　water　absorption　were　the　lowest,　the　bulk　density　and　heat-resistant　property　were　the　highest　after　dipping　for　4　times.