Common gestational diabetes is diabetes that occurs only during pregnancy. Since the patient is in the gestation period, gestational diabetes has the potential to affect the fetus, so pregnant women must pay attention if diabetes is detected during pregnancy. Generally, pregnant women will not know if they have gestational diabetes, only through the glucose tolerance test can be checked out, most of the screening tests for gestational diabetes, is done in the 24th week of pregnancy. Once diagnosed with gestational diabetes should pay attention to, otherwise both the pregnant woman herself and the fetus will be greatly affected, serious cases directly related to life. 1, the impact on the pregnant woman may induce ketoacidosis, pregnant women with gestational diabetes, although the postpartum body will recover, but in the future the chances of developing type 2 diabetes will greatly increase, and increase the chances of developing gestational hypertension, cesarean section of the chances of increasing. 2, the harm to the child As glucose through the umbilical cord into the fetal body, will make the fetal pancreas secretion of more insulin, as growth stimulating hormone insulin will directly make the fetal tissue proliferation, the formation of giant babies. Babies born to mothers with gestational diabetes have a three to four times greater risk of major defects. In the early stages of gestational diabetes, the best way to treat it is through dietary control and medication, and it is important to work with your internist to stabilize your blood sugar and keep the condition from worsening until delivery. However, there are special cases when the condition of gestational diabetes is more serious, which has directly threatened the life of the pregnant woman and the fetus, and it is not suitable for delivery at this time. Therefore, gestational diabetes should not be ignored, for the sake of your own life and the health of the fetus, pay attention to dietary habits before pregnancy and early pregnancy.