Jujube (scientific name: Ziziphus jujuba Mill.), nickname jujube, jujube, jujube jujube thorn, guan. Rhamnus jujube plants, deciduous small trees, shrubs, up to 10 meters, bark brown or grayish brown, petiole 1-6 mm long, or on the long branch up to 1 cm, hairless or sparse hair, spiny leaf fine, and later often shedding. Yellow green, bisexual, glabrous, with short peduncle, solitary or dense axillary cymes. Drupe oblong or oblong ovate, 2-3.5 cm long, 1.5-2 cm in diameter, from red ripe red purple, mesocarp fleshy, thick and sweet. Seeds oblate ellipsoid, about 1 cm long, 8 mm wide. 
Mountains, hills or plains that grow below 1700 meters above sea level. It is widely cultivated. This species is native to China and is often cultivated in Asia, Europe and America. 
Jujube contains rich vitamin C, vitamin P, except for fresh food, often can be made into jujube, red dates, smoked jujube, Heizao, wine, jujube candied and preserved fruit teeth, can also be used for jujube, jujube, jujube, jujube wine vinegar, as raw materials for food industry.