Pregnant women who are only occasionally unhappy, generally have less impact on the fetus, but if often bad mood, it will have a certain impact on the fetus, mainly contains the following points: 1, affect the fetal character: pregnant women’s mental state, emotions, behavior, awareness can affect the body’s hormone secretion, will affect the child’s character formation, so that after birth the fetus learning ability, interpersonal skills decline, for the social Adaptability decreases, prone to pessimism, irritability and other bad mood, a long period of bad mood may also affect the child’s intelligence; 2, hyperactivity: if the pregnancy is often irritable, irritable, affecting the development of the fetal hypothalamus, the child may be noisy and restless after birth, and may even be more active, some children will suffer from hyperactivity; 3, poor development: pregnant women for a long time of bad mood, will lead to their own The endocrine function and plant nerve function disorders, and excessive mood swings can easily lead to oxygen deprivation, thus affecting the normal heartbeat of the fetus, will have a negative impact on the healthy development of the child; 4, other: pregnant women in a bad mood, easy to produce prostaglandins lead to uterine contractions, thus causing miscarriage or preterm delivery.