Blood glucose 19mmol/L is more serious, patients may experience diabetic symptoms, delayed wound healing and aggravated infection, and may also experience acute complications of diabetes, such as diabetic ketoacidosis. 1. Diabetic symptoms: Whether fasting or postprandial blood glucose reaches 19mmol/L, patients may experience diabetic symptoms such as excessive drinking, excessive eating, excessive urination, weight loss, etc., which affects the patient’s life. 2. Delayed wound healing:Whether the patient’s fasting blood glucose or postprandial blood glucose reaches 19mmol/L, it may lead to vascular damage, microcirculation disorders, local vascular malnutrition, and delayed wound healing. 3. Aggravation of infection:Whether the patient’s fasting blood glucose or postprandial blood glucose reaches 19mmol/L, the patient’s immunity may be reduced, in the face of bacterial, viral and other pathogens can not make effective resistance to the invasion of recurrent infections. 4. Acute complications of diabetes: whether the patient’s fasting blood glucose or postprandial blood glucose reaches 19mmol/L, we need to consider whether there are acute complications of diabetes, such as diabetic ketoacidosis, which is a very dangerous situation, the development of the disease may be comatose, need to be hospitalized. If the blood sugar 19mmol / L, should actively cooperate with the doctor to improve the relevant examination, clear diagnosis, and targeted treatment or treatment, do not rely on a single result to judge the condition.