Mangosteen can be eaten in moderation by diabetics with stable blood sugar control, but is not recommended if blood sugar control is poor. Mangosteen is nutritious, but also has a high sugar content, so diabetics need to ensure that their blood sugar is within a controlled range before and after eating mangosteen. Fasting blood sugar less than 7 mmol/L and two hours after meals less than 8 mmol/L should be consumed between meals. In addition, diabetic patients must eat mangosteen in controlled amounts, no more than 100 grams per day, to avoid excessive intake, which can affect blood sugar levels. Mangosteen is rich in nutrients, rich in sugars, B vitamins, proteins and lipids, which can supplement the body’s nutritional needs. Mangosteen can moisten the throat and remove dryness, which can improve dry mouth, dry eyes and poor sleep. The fiber rich in mangosteen also promotes absorption in the stomach and relieves the pressure on the stomach and intestines, so it is good for the body of diabetic patients to eat mangosteen in moderation. Diabetic patients should develop a diet plan under the guidance of a doctor and try to consume foods high in dietary fiber, such as cereals and green vegetables. Also, the diet should be low in salt, sugar and fat, and limit foods high in salt and processed foods such as soy sauce, chicken essence and smoked types. Proper daily exercise to promote sugar metabolism.