In order to screen the extraction materials of tea polysaccharide with high blood-sugar degradation activity,the contents of soluble saccharide in the fixed fresh leaves and semi-finished tea samples made by some improved tea varieties in Fujian province such as Tieguanyin,Huangdan etc.were determined.The results showed that Dangui was the best material for the extraction of soluble tea polysaccharide.Then the tea polysaccharide in the fresh leaves or semi-finished Oolong tea samples of Dangui,Chunlan,Yuemi...