High blood sugar during pregnancy can return to normal after giving birth if it is caused by gestational diabetes, but it is prone to type 2 diabetes later on, and the child may be obese and diabetic later on. If it is type 2 diabetes or type 1 diabetes caused by high blood sugar in pregnancy, after giving birth to a child usually does not return to normal High blood sugar in pregnancy is gestational diabetes mellitus, refers to the sugar metabolism before pregnancy is normal, but after pregnancy diabetes, is a relatively common pregnancy complications, and insulin resistance increased and insulin secretion is relatively insufficient. Maternal diabetes mellitus may return to normal blood glucose for a certain period of time after delivery, but more than half of them will develop type 2 diabetes in the next 10-20 years, and the children born with it will have an increased likelihood of obesity and diabetes, as well as an increased risk of cardiovascular disease. Although high blood glucose in pregnant women can be recovered after giving birth, high blood glucose in pregnancy can have a greater impact on the fetus and the pregnant woman, once diagnosed as high blood glucose in pregnant women, active intervention should be required.