Diabetic patients can eat mangosteen, but it is recommended to eat less. Mangosteen is rich in dietary fiber, vitamins and minerals such as magnesium, calcium, phosphorus, potassium, etc., which is good for diabetic patients, and is known as the “King of Tropical Fruits”, but it contains especially much sugar, 100g of mangosteen will have about 18g of sugar, which is easy to be absorbed by the human body, and will increase blood glucose concentration when converted to blood glucose in the body. When it is converted to blood sugar in the body, it will increase the blood sugar concentration. If diabetic patients eat it at this time, it may increase blood sugar and affect the stabilization of blood sugar. Although mangosteen contains a lot of nutrients, diabetic patients can replace it by eating more vegetables, such as cucumber and tomato, etc., formulating a good diet, controlling the blood sugar level and reviewing it regularly, adjusting the dosage of hypoglycemic drugs, etc., and adjusting the dosage according to the condition under the guidance of doctors. Therefore, mangosteen is high in sugar content, diabetic patients should avoid eating and eat other foods that are low in sugar content and rich in various nutrients. It is recommended to arrange the diet under the guidance of the doctor.