Mothers and fathers with high blood sugar during pregnancy are at risk to their babies. High blood sugar during pregnancy is common in gestational diabetes and diabetes combined with pregnancy, regardless of which case, poor control of blood sugar during pregnancy is prone to the formation of a huge child, increasing the risk of shoulder dystocia during normal delivery. And poor glycemic control in early pregnancy, is prone to fetal growth restriction, serious can lead to embryonic death or miscarriage, and at the same time prone to complications of preterm labor, hypertensive disorders of pregnancy, fetal distress or even intrauterine, the risk of fetal malformation is also increased by 7-10 times. The risk of neonatal respiratory distress syndrome and neonatal hypoglycemia is also increased in pregnant mothers with high blood glucose during pregnancy, and in severe cases, the life of the newborn is endangered. Gestational diabetes is a common myopathy during pregnancy, which is harmful to both the baby and the mother. Once elevated blood glucose is detected during labor and delivery, it should be monitored and controlled under the guidance of an obstetrician, so as to avoid adverse pregnancy outcomes.