Calcium(Ca)plays important roles in fruit quality improvement，which affects the commodity value of fruitsand cultivationbenefits.Therefore，it is of great significance to study the effects of Ca on fruit quality and storability for theimprovement of fruit characteristics and industrial development of winterjujube( Zizyphus jujubaMill.cv.Dongzao).However， few reports are available about Ca application of winter jujube and no study was found on the effectiveness of calcium acetate[Ca(Ac) 2].A field experiment was conducted to study the effects of different Ca fertilizers，ie.，calcium chloride(CaCl2)，calciumacetate，and their co -application on fruit quality and storability of winter jujube through pre-harvest spayapplicationat fruit ripening period.The results showed the pre -harvest application of Ca fertilizers significantly enhancedthe contents of solublesolid，vitaminc(Vc)，Ca and total flavone as wellas fruitfirmness，which improved fruitquality. Compared with solely application of CaCl2，the contents of solublesolid，Ca，and total flavone in jujube fruit were increasedbyCa(Ac) 2application.Compared with solely application ofCa(Ac) 2，its co -application with CaCl2 performed thesame effectiveness of improving fruitquality.Under normal temperature storage，the soluble solid content in fruits wasincreased，the acidity decline was spedup，and the Vc consumption and softening of fruits were slowed down byCa(Ac) 2application.Compared with solely application of CaCl 2，theCa(Ac) 2 application was beneficial for maintaining moistureof winter jujube and its shelflife.There results suggested that pre -harvest application ofCa(Ac) 2 was an effective measurefor the improvement of fruit quality andstorability.