Abstract-To explore the effect to storage method of fresh Xinhui citrus peels by using against storage and ethanol mildewproof method, the main fungus which caused the mildew of fresh peels was also checked. The effect of hance ginger on peel moldy was observed by changing the humidity of storage environment of citrus peels; the effects of storage conditions were also observed using different concentrations of ethanol sprayed on fresh peel, and the effects of ethanol on the flavonoids of fresh citrus peel during storage. Both the hance ginger against storage and ethanol against storage methods can effectively delay the mildew of fresh citrus peels, the latter method can effectively inhibit the mildew. The main fungi produced by microbial culture experiment showed that mildew after is Penicillium and Aspergillus niger.