Generally speaking, glucose tolerance 2-hour blood glucose ≥11.1mmol/L and typical diabetes symptoms, can be diagnosed as diabetes mellitus, it is recommended to carry out glucose tolerance test under the guidance of the doctor. Glucose tolerance is glucose tolerance test, normal glucose tolerance 2-hour blood glucose should be <7.8mmol/L. If 2-hour blood glucose ≥7.8mmol/L and <11.1mmol/L after glucose load, it suggests that glucose tolerance is reduced; if glucose tolerance 2-hour blood glucose ≥11.1mmol/L and there are typical diabetic symptoms, then it meets the criteria for diagnosing diabetes. If the glucose tolerance test 2-hour blood glucose is obviously elevated, it is recommended to further improve the examination under the guidance of the physician to clarify whether there is diabetes mellitus. Confirmed diagnosis of the patient under the guidance of the doctor active treatment.