Whether a pregnancy tantrum has any effect on the fetus needs to be analyzed according to the number of tantrums and their extent. If you lose your temper once in a while, it usually has no obvious effect on the fetus. If the temper tantrum for a long time, the degree of intensity, can have a certain impact on the fetus. 1, developmental delay: tantrums can make the pregnant woman’s mood is in a state of instability, easy to make its adrenaline changes, thus affecting the growth and development of the fetus; 2, intrauterine oxygen deprivation: if a pregnant woman during pregnancy frequent temper tantrums, for a long time can be caused by the blood pressure, resulting in supply of blood to the umbilical cord to reduce the amount of blood and the uterine vasoconstriction, in severe cases, can be caused by the fetal Heart rate acceleration, resulting in intrauterine hypoxia; 3, preterm labor: late pregnancy pregnant women lose their temper too excited, may stimulate the uterus to appear vaginal bleeding or early contractions, which in turn cause preterm labor; 4, preterm miscarriage: the embryo is unstable in the early stages of pregnancy, while the various organs and systems are in the differentiation, development of the sensitive stage of the pregnant woman’s emotional fluctuations may cause embryonic stagnation, which may lead to miscarriage; 5, congenital defects Disease: Long-term temper can lead to anxiety, depression and other negative emotions, can stimulate the activity of the vegetative nervous system, thus causing changes in acetylcholine and some hormone secretion, and such substances can be through the blood through the placenta and the umbilical cord into the body of the fetus, easy to lead to fetal dysfunction after birth, especially digestive system disorders. Therefore, during the whole pregnancy, if the pregnant woman’s emotions are unstable, she should be reasonably detached, and her family should give psychological support and understanding. Pregnant women themselves need to learn to express their negative emotions and choose appropriate ways to vent their negative emotions, such as singing, watching movies, and exercising appropriately. If she loses her temper frequently and is unable to control herself, she should actively seek psychological treatment to avoid adverse effects on the fetus.