In recent years, gestational diabetes mellitus (GDM, hereinafter referred to as GDM) has become a focus of clinical work in obstetrics for two reasons: first, GDM can produce many serious complications such as giant babies, excessive amniotic fluid, delayed fetal lung maturation, preterm delivery, infection, severe fetal distress and even fetal death in utero, and the incidence is not low; second, in most cases, the treatment of GDM is very simple, which is to adjust maternal blood glucose to the ideal range in various ways to ensure normal maternal and fetal metabolism and normal fetal development. Second, in most cases, the treatment of GDM is very simple, which is to adjust the maternal blood sugar to the ideal range in various ways to ensure the normal metabolism of the mother and child and the normal development of the fetus, to put it bluntly, is to lower blood sugar. In other words, GDM is a serious but curable disease (not absolute), so she should get clinical attention, and can achieve the effect of four or two thousand gold in clinical practice. The diagnosis of GDM is a headache, because there are too many diagnostic criteria, such as WHO criteria, textbook criteria, and U.S. treatment guideline criteria; two-step method and one-step method. There are some subtle differences between them, which are also the result of keeping up with the times. So far, in clinical work, the guideline standard DD is adopted, that is, after 24 weeks of pregnancy, 75 grams of glucose tolerance test (OGTT) is performed, and its fasting, 1 hour after taking sugar, and 2 hours after taking sugar intravenous blood glucose values are 5.1, 10.0, 8.5, in mmol/L respectively (the original 50 grams of sugar screening and 3 hours after taking sugar in glucose tolerance are eliminated). before 24 weeks It is still compared to the adult fasting glucose value standard, and its diagnosis should be considered as diabetes combined with pregnancy. After the adoption of this diagnostic standard, the common feeling is that the standard is too low! Could there be too many patients? Although the standard is lower than the original one and the number of patients has increased, the incidence rate still does not exceed 20%, that is, there are not too many patients in the box because of the adjustment of the standard. For patients diagnosed with GDM, through detailed and careful explanation of the risks, most patients are able to cooperate and follow the clinician’s treatment plan to minimize the risks during pregnancy. For the treatment of GDM, there are only three items: diet control, exercise, and insulin therapy, and the first two are carried out by the patients themselves under the guidance of their doctors, and it has been confirmed that most patients can achieve ideal glycemic control and weight control through diet modification and exercise. Through this, I personally believe that our obstetric clinics should routinely offer nutrition clinics, not only for GDM pregnant women, but also for those non-GDM pregnant women to receive reasonable nutritional guidance during pregnancy, even though they are not classified as GDM, they should also achieve ideal pregnancy weight gain and good control of fetal weight, thus reducing the resulting factors of obstructed labor (bearing in mind that China’s current The proportion of huge babies is getting higher and higher, and has become a major cause of cesarean delivery). From this point of view, lowering the diagnostic criteria for GDM not only expands the range of patients, but also raises the importance of the patient’s diet during pregnancy, which not only reduces obstetric risks, but also improves the quality of the birth population to a certain extent, which is not just a medical progress, but a progress of the maternal and child health care industry, and its significance has exceeded the simple diagnostic criteria.