The present invention relates to a method for manufacturing a composition having anti-obesity and anti-diabetic activity using stems and leaves of Codonopsis lanceolata, provided in a form to be commercialized by being added to a functional product in a form of food or drink that is ingested or consumed daily through optimized process conditions for extracting hot water and extracting crude polysaccharides of stems and leaves of Codonopsis lanceolata.
展开▼