The Blue Ceramic abrasives prepared by the sol-gel method is a kind of sintered abrasive. Its Alumina grain is very small, which is a few hundredths of the grain size of common ceramic abrasives. It also contains flake grains that embedded in the alumina grains. Owing to the unique structure and composition, the BCA has better high temperature resistance and superb self-sharp ability, which makes it a more excellent ceramic abrasives.