Pregnant women’s glucose tolerance did not pass, mainly refers to glucose tolerance is high, blood sugar control is not good may lead to fetal growth and development retardation, cause intrauterine distress, neonatal asphyxia and other possibilities. 1. Fetal growth retardation: If excessive blood sugar is restrained or nutrition is controlled due to high glucose tolerance, the pregnancy may directly affect the embryonic development, resulting in fetal growth retardation, which may easily cause malnutrition. 2. Intrauterine distress: high glucose tolerance and sustained increase in blood glucose will easily affect the intrauterine environment, leading to embryo distress in the uterus and a higher risk of fetal arrest. 3. Neonatal asphyxia: poor glycemic control affects the normal development of the embryo, which can easily lead to asphyxia and death of the newborn as soon as it is born. If pregnant women with high glucose tolerance are not treated in time, it will also cause difficult labor and lead to hypoglycemia of the newborn. At present, it is necessary to control blood sugar as soon as possible and monitor glucose tolerance regularly.