People with diabetes can usually consume tomatoes in moderation on a daily basis. Diabetes mellitus is an endocrine disease characterized by chronic elevation of blood glucose, which is mainly caused by insufficient insulin secretion or insulin resistance resulting in abnormal elevation of blood glucose. Therefore, the diet of diabetic patients should be based on a low-sugar diet. Glycemic index is the ability of food to raise blood sugar. Tomatoes have a glycemic index of less than 15, which is a low glycemic index food. In addition, tomatoes are rich in vitamin C, which has antioxidant properties, and their calories are low, making them suitable for diabetic patients, and usually do not cause a significant rise in blood glucose when consumed in moderation. Diabetes should go to the hospital in a timely manner, under the guidance of the doctor active treatment, so as not to delay the condition.