Occasional noise and irritability during pregnancy does not have much effect on the baby, but in the long run it may lead to fetal growth and developmental delays, or even preterm miscarriages, or character defects after the baby is born, and so on. During pregnancy, due to hormonal disorders and uterine enlargement, may press on the digestive tract and the heart and so on many complications, serious discomfort, so pregnant women in pregnancy mood will be relatively unstable. Short-term mood irritability for the fetus does not have a great impact, while long-term mood irritability may affect the blood supply and oxygen supply for the fetus, and long-term irritability. Pregnant women’s own nutritional intake for the baby’s nutritional absorption, will also decline, the two combined, can lead to fetal ischemia and hypoxia, intrauterine growth restriction, malnutrition, serious or even aura of miscarriage or miscarriage and so on. So during pregnancy, pregnant women can eat their favorite foods, go out for a walk, moderate activities to ensure that the mood of the relief, to avoid the mood of irritability for their own as well as the fetus to have an impact.