[Objective] The aim was to obtain the preparation technology of the pomegranate peel polyphenol nanoemulsion. [Method] The pomegranate peel polyphe- nol nanoemulsion was prepared by the titration methods and the pseudo ternary dia- gram. The effect of various elements on the formation of the nanoemulsion was stud- ied. [Results] The optimal prescription of the pomegranate peel polyphenol nanoemul- sion was 4.4%（w/w） of pomegranate peel polyphenol, 34.1%（w/w） of EL-40, 17.1%（w/w） of anhydrous ethanol, 5.7%（w/w） of IPM and 38.7%（w/w） of distilled water. [Conclusion] It is feasible to produce the pomegranate peel polyphenol nanoemulsion by the titration methods and the pseudo ternary diagram. It consists of pomegranate peel polyphe- nol, EL-40, anhydrous ethanol, IPM and distilled water. There is 4.4%（w/w） of the pomegranate peel polyphenol in the nanoemuJsion.
