Abstract:Objective: To analyze the change rules of carbohydrate content in Ginseng Radix et Rhizoma root, stem and leaf from different growth period. Method: Acquisition Ginseng Radix et Rhizoma root, stem and leaf samples from the spreading stage, the flowering stage, the fruit growth stage, the root growing after fruit stage and the withering stage, ultraviolet spectrophotometry was adopted to detect the content of total sugar, reducing sugar and soluble polysaccharide in Ginseng Radix et Rhizoma. Result: The content of total sugar and reducing sugar in Ginseng Radix et Rhizoma root reached the maximum value at the fruit growth initial stage, the soluble polysaccharide content reached the maximum value at the fruit growth later stage; the total sugar, reducing sugar and soluble polysaccharide content in Ginseng Radix et Rhizoma stem and leaf had no significant change at the throughout growth stages. Conclusion: The content of total sugar, reducing sugar and soluble polysaccharide in Ginseng Radix et Rhizoma have their own variation at the different growth period, and may be closely related to the plant morphogenesis and material metabolism.