Abnormal glucose tolerance is more common. Abnormal glucose tolerance is usually a pre-diabetic manifestation, that is, between a normal person and a diabetic. There are many people with diabetes in our country, and many undetected diabetics and potential diabetics. Therefore, abnormalities in this indicator are more common in clinical practice. This abnormality is most common in people with poor lifestyles, such as sedentary lifestyle and overeating. Symptoms can usually be improved by timely control with medication and lifestyle changes. If an abnormality occurs, it is recommended that the patient seeks medical attention to diagnose the cause of the abnormal glucose tolerance and to treat the abnormality. If left unchecked, it may lead to persistent abnormalities in blood glucose, which may lead to life-threatening conditions such as diabetic ketoacidosis.