Jujube is very rich in nutrition. Fresh jujube contains 20%-36% sugar and dried jujube contains 55%-80% sugar. It contains a lot of calories and can be used as a substitute for grain. It was often used for disaster relief in history. The content of vitamin C is among the best in fruits, with a content of 0. L-0.6g per 100g, which is about 0 100 times higher than that of apples and peaches, and the content of vitamin P is also the highest among all fruits. People praise jujube as a "natural vitamin pill". Every hundred grams of fresh jujube contains protein1.2 grams, which is almost the highest among fresh fruits. The heat output of dried jujube is extremely high, and the heat output per hundred grams of jujube is about1200-1300 kilojoules, which is close to that of raisins, and the contents of protein, calcium, phosphorus, riboflavin and nicotinic acid are higher than those of raisins. Therefore, people have always regarded red dates as excellent tonics.