Fasting blood glucose 9.6mmol/L may cause complications, including acute severe metabolic disorders, infectious diseases and chronic complications. 1. Acute severe metabolic disorders: If the disease is not treated in time and allowed to progress, blood glucose continues to rise, hyperosmolar hyperglycemia syndrome and ketoacidosis can occur. 2. Infectious diseases: due to the elevation of blood glucose, resulting in the decline of the body’s immune ability, easy to complicate a variety of infectious diseases. 3. Chronic complications: If fasting blood glucose rises abnormally over a long period of time, it is easy to lead to chronic complications, including diabetic ophthalmopathy, diabetic nephropathy and diabetic lower limb vasculopathy. Diabetes can involve all the important organs of the body, leading to systemic multi-organ dysfunction, so if you suffer from diabetes, you should go to the hospital in time, under the guidance of the doctor for treatment.