Carbohydrate content has an effect on diabetes by raising the body’s blood glucose concentration and may aggravate the condition when in excess. Carbohydrates are the main source of blood glucose, and diabetics should consume low-carbohydrate foods and control their total energy intake to avoid excessive rise in blood glucose. Diabetic patients should eat a nutritionally balanced diet with fewer meals and fewer carbohydrate-rich foods, such as white rice, white bread and other staple foods made of fine grains, and can choose coarse grains with relatively fewer carbohydrates as their staple foods, such as black rice, buckwheat, quinoa and so on. Blood sugar should be monitored regularly. Diabetic patients should follow the doctor’s instructions for medication in daily life, carry out moderate exercise, enhance physical fitness, and consult a doctor in time when abnormalities occur.