Abstract: ‘Jingzao 18’is a new sour jujube cultivar which was selected from a Beijing’s ancient satus jujube tree after many times grafting and regional testing. The fruit is cylindrical in shape. The average mass of single fruit is 11.8 g. The peel is purple-red. The flesh is crisp and contains abundant sour juice. The soluble solids content is 31.6%，total sugar content is 23.3%，vitamin C content is 3.74 mg · g-1，and the titratable acid is 1.44%. The quality is excellent. The fruits mature in the mid-early September in Beijing.

Key words: jujube, sour, cultivar