Abstract:  High purity alumina has become one of important functional materials due to its excellent physical and chemical performance and it has applied extensively in technical fields，such as machinery，electron，chemical，and optics industry etc.. Major methods of producing high purity alumina were introduced. The advantages and disadvantages and characteristics of these methods were analyzed.Latest application fields of high purity alumina were also introduced. Furthermore，research direction of high purity alumina in future was prospected.

Key words: high purity alumina, functional material, preparation method