Diabetic patients are not recommended to eat watermelon, if the blood sugar control can be a small amount of food. The glycemic index of watermelon is 72, belonging to the high glycemic index food, easy to cause blood sugar rise after consumption, not conducive to the stability of blood sugar in diabetic patients, so diabetic patients are not recommended to eat. Diabetic patients in the case of good blood sugar control can eat a small amount of watermelon, it is best to choose to eat watermelon between meals, after eating watermelon, need to moderately reduce the amount of other foods. Diabetic patients should be low-salt, low-fat, low-sugar diet, you can choose green vegetables, coarse grains and beans, chicken, duck, fish, eggs and milk and other foods, control the total energy intake, moderate exercise, follow the doctor’s instructions to take regular medication, regular follow-up.