The application and preparation methods of microcrystalline starch were reviewed in this paper. According to the primary procedure of the formation of microcrystalline starch

the preparation methods were classified as retrogradation

hydrolyzation and crystallization.On the basis of classification by the crystal type (A-

B-

C-and V-type)

microcrystalline starch can be classified into retrograde

original and crystal microcrystalline starch by the difference of the preparation methods.The meaning of microcrystalline starch was defined in the article which was proposed that

microcrystalline starch is a kind of aggregate of microcrystal strand

crystalline lamellae or other crystal form with high crystallinity.The crystal type and the crystal type transform of microcrystalline starch were also described in detail.