Tricolor brown rice can be eaten by diabetics, but attention should be paid to the amount of food consumed, not more than the diabetic patient’s intake of staple food per meal. Three-color brown rice glycemic index is relatively low, belonging to the low glycemic index food, suitable for diabetic patients to eat. Compared with refined rice and noodles, brown rice is a coarse grain, rich in dietary fiber, and a strong sense of satiety after consumption. Although brown rice is better as a staple food, diabetic patients need to control the amount of staple food eaten at each meal, therefore, brown rice should not be eaten more. Dietary treatment is the foundation of diabetes treatment. The amount of staple food for diabetic patients should be formulated by specialists after professional diagnosis and treatment according to height, age, weight and blood glucose level. Diabetic patients should strictly follow the doctor’s instructions to control their diet and avoid blood sugar fluctuations.