People with diabetes can usually drink fruit juices in moderation or in small amounts, but it is not recommended to drink large amounts. In particular, fruit juices with high sugar content are not recommended. Fruit juice is a drink made from fruits through physical methods, etc. For fruit juices made from fruits with low glycemic index such as apples, pears, peaches, etc., they can be consumed in moderation and in small quantities; for fruit juices made from fruits with high glycemic index such as watermelon, it is not recommended to consume them in order to avoid fluctuations in blood glucose. Diabetic patients generally need to control sugar due to high blood glucose levels and need to pay extra attention to their diets. Prioritizing low-glycemic index foods will help to improve blood glucose. In addition, ensuring good living habits, avoiding late nights, and exercising appropriately will also contribute to good health. Diabetic patients with abnormal blood glucose should seek prompt medical attention.