There is high medicinal in value Rhubarb, containing trace elements,anthracene deirvatives, stilbene compounds, tannins, organic acids, volatile oils, etc..Extraction and determination of the main ingredients of rhubarb are a lot, but thesystem reported little, so rhubarb extraction and determination of trace elements,tannins, organic acids, volatile oil, resveratrol did a full analysis and The extractionconditions were optimized, and laid the theoretical basis for the pharmacologicaleffect after the studyi...