The Ciyi compund was the experienced prescription of enhance immunity and in order to determine the efficacy of its water extraction process to study the composition.Optimum extraction process was optimized by the syringin,polysaccharide content and extraction yield as the evaluation index and used the method of Multi-index weighted score and L9(34) orthogonal design method.Then,the optimal process was validated.Result showed that the effects of the factors such as the extraction times,the ratio of material...