Jujube date is the fruit of Ziziphus jujube mill plant of Rhamnaceae. It contains many effective components, such as amino acid, vitamin, polysaccharide, flavonoid, saponin, all that can strengthen immunity, postphone senescence, protect from vascular sclerosis, etc. With the increase of people's life level and deep knowledge of safety about edible synthetic pigment, the role of the edible natural pigment is more prominent because of its higher safety. Therefore, study on extraction of red pigment from juju...