Elevated blood sugar after pregnancy will have adverse effects on the baby, such as macrosomia, miscarriage, increased risk of diabetes in the baby, etc. The details are analyzed as follows: 1. Huge baby: When the blood sugar of pregnant women rises, the blood is over-nutritious, which will make the baby bigger in size, called huge baby, thus triggering difficult labor, which is unfavorable to the smooth birth of the baby. 2. Miscarriage: When a pregnant woman’s blood sugar rises, the environment in the uterus is not suitable for the baby’s survival, so miscarriage may occur in early pregnancy. 3. Increased risk of diabetes in the baby: As the fetus is in a high sugar environment during fetal life, the baby’s blood sugar is also prone to abnormalities in adulthood, causing more risk of diabetes. Therefore, persistent high blood sugar in pregnant women may also lead to intrauterine hypoxia and the risk of fetal death in the womb. Pregnant women should actively control their blood glucose, use insulin and other medications, and seek medical attention in a timely manner, according to their own conditions, use medications under the guidance of a doctor, and avoid unauthorized use of medications to prevent adverse consequences.