Whether blood glucose greater than 9mmol/L is diabetes or not needs to be judged according to whether the patient has the typical symptoms of diabetes, “three more and one less”, and whether the value is fasting, 2 hours after meal or random blood glucose. If it is fasting blood glucose, it is hyperglycemia, if it is 2 hours after meal, it is impaired glucose tolerance, and if it is random blood glucose, it is in the normal range. The latest diagnostic criteria for diabetes mellitus are the typical symptoms of “three more and one less” (drinking, urinating, eating, and weight loss) plus a venous plasma glucose measurement of ≥11.1 mmol/L or a fasting glucose of ≥7.0 mmol/L at any time of the day, or a glucose of ≥11.1 mmol/L at 2 hours after a glucose tolerance test (OGTT), all of which meet the three criteria. mmol/L, and a diagnosis of diabetes is made when one of these three is met. Therefore, blood glucose greater than 9mmol/L alone cannot determine whether diabetes is present or not, but needs to be analyzed in conjunction with the condition. If your blood glucose is greater than 9mmol/L, we recommend that you go to the hospital and see if you need to undergo a glucose tolerance test according to your physician’s instructions, to determine whether or not you have diabetes in combination with the typical symptoms of diabetes, and then proceed with the appropriate treatment. If there is any discomfort, consult the doctor in time.