Patients with fasting blood glucose 6.5mmol/L are recommended to choose staple foods rich in dietary fiber and with low glycemic index, such as corn, oats, quinoa, etc. Instead of porridge and pastes, it is recommended to make dry food as staple food, which can be eaten in small portions and control the total energy intake of the day. Fasting blood glucose is normal for 3.9~6.1mmol/L, 6.1~6.9mmol/L for pre-diabetes, ≥7.0mmol/L with diabetic symptoms can be diagnosed as diabetes. When the fasting blood glucose is 6.5mmol/L indicates that the blood glucose is high but does not reach diabetes; such patients actively control the diet, appropriate exercise, it is possible to return to normal. For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol / L ~ 7.0mmol / L, fasting blood glucose is 6.5mmol / L belongs to the glycemic control standard, but still need to control the diet, to avoid fluctuations in blood glucose. In the choice of staple food can be appropriate to reduce the intake of refined rice, refined flour, increase the dietary fiber-rich and low glycemic index staple food, such as corn, oats, black rice, quinoa, buckwheat, etc., to help maintain blood glucose stability. Porridge and paste foods are not recommended because they are easily digested and absorbed and rise in sugar faster. You can eat smaller meals to control the total energy intake in a day. Patients with high fasting blood glucose should seek medical consultation and maintain a healthy diet in daily life.