The normal range of blood glucose 2 hours after taking sugar should be 4.4-7.8 mmol/L. If it is more than 7.8 mmol/L but less than 11.1 mmol/L, the patient has hypoglycemia, which is often called abnormal glucose tolerance. In addition to abnormally high blood glucose, patients with diabetes often have symptoms of polyuria, polyphagia, polyphagia and weight loss, and some of them also have symptoms such as itchy skin. If you find abnormal blood glucose or the above symptoms, consider that you may have diabetes, and go to the hospital for a glucose tolerance test to confirm the diagnosis. If the patient is already using insulin, he or she can choose to be tested with C-peptide, which can distinguish between his or her own insulin and injected insulin. If an abnormal blood glucose level occurs, it is important to follow a regular diabetic diet, regardless of whether or not the patient has diabetes. The daily calorie intake should be controlled in general, and the daily staple food should not exceed 250g. The intake of sugar, fat and protein should be strictly controlled in daily life, and foods with high sugar and high fat should be prohibited. Keep a light diet, drink as little alcohol as possible, and exercise moderately to keep the weight in a normal state. Actively cooperate with medication to keep blood sugar in a normal state.