Diabetic patients can choose fruits with low sugar content and eat them in small amounts after their blood sugar reaches the standard. Apples contain 11%-13% sugar and have a glycemic index of less than 55%, which is a low sugar content fruit. Apples are rich in nutrients, containing a variety of vitamins and minerals, as well as gums and trace elements of chromium, polyphenols and flavonoids, which are beneficial to diabetics. Diabetic patients can eat apples, but they must be limited to 50-100g per serving. Diabetic patients must choose the time to eat apples, one hour before or two hours after meals when blood sugar levels are low, as an additional meal. To eat apples, calories should be calculated and converted to the total calorie intake of the patient for the day. In addition, blood sugar should be monitored two hours before and two hours after eating apples to prevent fluctuation of blood sugar. In conclusion, apples belong to fruits with low sugar content and low glycemic index. It is beneficial for diabetic patients to eat apples and diabetic patients can eat apples.