Bedtime blood glucose 5.2mmol / L belongs to normal blood glucose, but fasting 11.3mmol / L is significantly higher than normal, belongs to the abnormal blood glucose, may be the dawn phenomenon or the Sumuje effect caused by. If accompanied by diabetic symptoms, the diagnosis of diabetes can be confirmed after review by the regular hospital; for diabetic patients, it belongs to the sugar control does not meet the standard. Clinical fasting blood glucose normal value range of 3.9 ~ 6.0 mmol / L, ≥ 7.0 mmol / L at the same time diabetic symptoms can be diagnosed as diabetes mellitus. For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol / L ~ 7.0mmol / L. So fasting blood glucose 11.3mmol / L is not normal. Dawn phenomenon refers to the increase of fasting blood glucose in the early morning due to the secretion of glucagon around dawn in the absence of hypoglycemia at night. Sumuje effect refers to the phenomenon of hypoglycemia at night and rebound hyperglycemia in the early morning fasting. It is recommended to test nighttime blood glucose to determine whether there is a hypoglycemic reaction, which can adjust the diet as well as the use of hypoglycemic drugs, insulin use time and the amount of bedtime. Abnormal blood glucose is recommended to seek timely medical examination.