The dragon fruit has a high sugar content. 1 kilogram of watermelon with skin contains 5 grams of sugar, dragon fruit contains 60 grams of sugar per kilogram, 12 times the watermelon. The common sugars in fruits are fructose, glucose, sucrose, starch, with different sweetness. Among them, fructose is the highest, sucrose is the second highest, glucose is the lowest, and starch is almost tasteless. Fructose is about 2.4 times sweeter than glucose. Therefore, whether a fruit is sweet or not depends not only on how much sugar it contains, but also on what kind of sugar it contains and the ratio of the various kinds of sugar. Some fruits taste sweet, in fact, the sugar content is not more than 10%, per 100g calories not more than 36 calories, such as watermelon, strawberries, papaya, apricots and so on. Some fruits do not taste sweet, or even have a sour flavor, but contain a lot of sugar, such as dragon fruit, hawthorn, ginseng, passion fruit and so on. Extended data on fruits with high sugar content:1. Durian treeAlthough durian does not have a high protein and fat content, and its raw glycemic index (GI) is around 42, which is not very high, two-thirds of its composition is sugar. For people with high blood sugar, high or low blood pressure, poor heart function and gastrointestinal ulcers, eating durian should still be done with caution. It is best to reduce the amount of food and then eat durian, so as not to consume too much heat, aggravate the original disease. 2, cherries cherries are rich in sugar, protein, vitamins, calcium, iron, phosphorus, potassium and other elements, the iron content of the fruit in the top of the list. It is a good product to supplement iron and brain, but diabetic patients should not be greedy.3. Lift the child Jujube peel and seeds contain antioxidant substances, can prevent cardiovascular and cerebrovascular diseases. But the sugar content is high, ten raisins calories equal to two two rice calories, diabetic patients should not eat more. 4. Siddhartha per 100 grams of Siddhartha can contain 15.3% ~ 18.3% of the total sugar, vitamin 265 mg, due to the taste of Siddhartha, high sugar, diabetic patients should be careful to eat. 5. Mango mango, a common tropical fruit, high glycemic index, diabetic patients should not eat. should not be eaten by diabetics. Mango is an allergy food. People with allergies may be allergic if they only touch the peel, so people with allergies should be careful.6. Dragon fruit is rich in vitamins B1, B2, B3, vitamin C, carotene, anthocyanins, and contains calcium, phosphorus, iron and other trace elements and water-soluble dietary fiber, which prevents constipation and helps to relieve constipation. However, due to the easy absorption of natural glucose, diabetic patients should not be more than one meal.