Dates are high in calories mainly because of their relatively high sugar content, which is 27.8%. The calorie calculation of food is related to protein, carbohydrate and fat components. Winter jujube is a relatively high calorie fruit, every 100 grams of winter jujube contains about 113 calories, of which 27.8 grams of carbohydrate content, 2.2 grams of crude fiber, 1.8 grams of protein, and 0.2 grams of total fat. Due to the winter jujube sugar content is relatively high, when the intake of too much, sugar can not be consumed in a timely manner, converted into fat accumulation in the body, easy to lead to obesity. Therefore, obese people, diabetic patients can not eat more jujube, so as not to cause excessive energy intake, resulting in elevated blood sugar.