The physical and mental health of the baby and the mother-to-be’s joy, anger, sadness and happiness are closely related. The emotional reaction of the mother-to-be can even affect the growth condition of the fetus in the following cases: 1. Pregnant women’s tantrums can easily lead to miscarriage. If you lose your temper when you are pregnant, a hormone will be released in large quantities in the pregnant woman’s body leading to spontaneous miscarriage. Pregnant women who are stressed have significantly higher levels of cortisol, a hormone that inhibits the secretion of progesterone, which is essential for maintaining a healthy pregnancy process; 2, the mental stress of pregnant women during pregnancy can lead to congenital defects in infants, is especially in pregnant women who have experienced major changes during pregnancy, the chances of giving birth to a baby with cleft palate, cleft lip, hearing defects and congenital heart disease is much greater than 3, the mental stress of pregnant women affect the growth of the baby fetus, the internal stress of pregnant women can hinder the growth of the fetus, stressful pregnant women than the weight of babies born to pregnant women with light psychological stress is also much lighter; 4, pregnant women under stress children are vulnerable to heart disease and diabetes, etc.