Pregnant women who get angry in the early stages of pregnancy are prone to hindering the development of the maxillary bone of the fetus and are at risk of malformations such as cleft palate and cleft lip. Because the early stage of pregnancy is a sensitive stage of embryonic tissue development, if you are in a state of worry, bad mood and anger for a long period of time, it will affect the carboxyhemoglobin in the blood of the mother and fetus, causing its value to rise, and with the rise in blood viscosity will cause adverse effects on the blood circulation of the placenta, resulting in the fetus having a hypoxia phenomenon. It affects the development of the maxillary bone of the fetus, which may cause retardation of fetal growth, and in severe cases, lead to asphyxiation or death of the fetus in the womb. If pregnant women experience abdominal pain and vaginal bleeding after getting angry, they should go to the hospital in time to check for the risk of preeclampsia. It is recommended that pregnant women maintain a happy mood during pregnancy, exercise appropriately, relax and eat a well-balanced diet.