Dear mothers-to-be, there is a special disease in pregnancy called gestational diabetes, which refers to the absence of diabetes before pregnancy and occurs only during pregnancy, and is generally prone to occur in those who are obese or have a genetic predisposition (parents with diabetes). Its main dangers are fetal distress during pregnancy, fetal death function, delayed fetal lung maturation, giant babies, obstructed labor, fetal growth restriction, neonatal asphyxia and even increased risk of death. Generally speaking, if the blood sugar is well controlled, the above complications are low, and on the contrary, they are high; moreover, if the blood sugar is poorly controlled, the child is born with heavy weight, and the risk of obesity and diabetes in adulthood are significantly increased. Therefore, all pregnant mothers with diabetes must go to a nutritionist to adjust their diet and control their blood sugar for the health of their children.