Abstract: In the deveLopment process of the Gastrodia elata, that the quantity of polysaccharide particles are increases along with the growth of corm and its volume are increase along with the growth of cells, up to the blossom and bear fruit, the quantity of polysaccharide particles are greatly declinesi The polysaccharide accumlate of the cells will be come to the highest eak, when the formation of inflorescence bud of Gastrodia elata and that has more marked distinction then before formation of inflorescence bud and after blossom (P <0.001). Thus, during the formation of inflorescence bud is the suitablest commodity Gastrodia elata harvest.

Key words: polysaccharide, distribution, development, process