[Objective] To detect sugar content in different varieties of ginseng grown for different years and analyze the distribution rules of sugar content.[Method] Ultraviolet spectrophotometry was adopted to detect the content of total sugar,reducing sugar and soluble polysaccharide in Korea ginseng,American ginseng,ginseng cultivated under forest and planted ginseng.[Result] Of the four ginseng varieties,the ginseng cultivated under forest had the lowest content of total sugar and reducing sugar,the highest redu...