Abstract: In this study, winter jujubes were coated with edible chitosan carrying Metschnikowia pulcherrima. Experiments showed that 0.1% (w/v) water-soluble chitosan could enhance the colonization of M. pulcherrima on surface of winter jujube. At the 50th day for preservation, effect of the biological coating was the most significant, with lowest decay rate of winter jujube at 19%, firmness, soluble solid contents and titrable acidity contents at 11.3 kg/cm², 19% and 0.55%, respectively, fewer nutrition loss, and higher content of VC at 250 mg/100 g. This research indicated that biological coating could obviously delay the caducity of winter jujube and could effectively prolong its storage period.