People with diabetes can eat watermelon, but in moderation, not too much, and watermelon with low sugar content is appropriate. However, whether diabetics can eat watermelon or fruit, it is best to let patients explore the law under the guidance of doctors, that is, measure blood sugar 2 hours after patients eat fruit to see if it is significantly increased. If the patient's blood sugar rises significantly after eating watermelon, it is better not to eat it. In addition, we should also consider the patient's mood. If a family or relatives and friends gather around and eat watermelon with a smile, the patient will not dare to eat it if he wants to, and his mood will be unhappy, which will also increase his blood sugar. At this time, you might as well eat a little, so that your thirst will not increase.