Pregnant women may be irritable and irritable during pregnancy due to changes in hormone levels and changes in body shape, mainly due to the following reasons: 1, changes in hormone levels: pregnant women’s body estrogen and progesterone levels increase after pregnancy, affecting the normal endocrine body, causing emotional changes in pregnant women, pregnant women may be unable to adapt and often lose their temper; 2, anxiety: pregnant women are often worried about the fetus during pregnancy 2, anxiety: pregnant women during pregnancy often worry about whether the fetus is developing normally, or the first time pregnant women, due to the unknown of the birth of anxiety, encounter things restless, easy to get angry; 3, physical changes: pregnant women’s body shape gradually become bulky after pregnancy, there will be stretch marks, swelling of the lower limbs and other performance, in addition, with increased physical discomfort, pregnant women often feel irritable, more easily angry. Long-term emotional depression and irritability may cause the fetus to cry, restlessness, poor sleep, digestive disorders after birth, and even miscarriage may be triggered by those who are too emotional. In addition, early pregnancy is a critical period of fetal differentiation, bad emotions can induce fetal malformations and other adverse consequences. Therefore, pregnant women should maintain a relaxed and happy mood during pregnancy, and can also take a walk, yoga, chat to ease the bad mood, family members can help pregnant women through pregnancy by accompanying, comforting and other ways.