Pregnant women after pregnancy may be due to changes in body shape, changes in the level of hormones in the body, easily triggered by grumpy, easy to get angry, mainly for the following reasons: 1, physical changes: mid-pregnancy began to gradually develop the fetus, pregnant women’s body burden increased, the body gradually clumsy, affecting daily life, accompanied by the gradual swelling of the body, stretch marks and other conditions, will lead to poor mood of pregnant women, manifested as often 2, hormonal changes: pregnant women during pregnancy in the body estrogen, progesterone levels significantly increased, resulting in endocrine disorders, which affects the emotional changes, prone to temper tantrums, often angry; 3, anxiety: pregnant women will worry about whether the fetus in the uterus is developing normally, as well as in early pregnancy pregnant women often have early pregnancy reaction, with physical discomfort gradually aggravated, in late pregnancy and facing the birth of Fear, leading to mental tension of pregnant women, easy to trigger anxiety, so grumpy. Negative emotions are not conducive to the growth and development of the pregnant woman and the fetus, and even excessive emotional excitement may trigger uterine contractions, leading to the adverse consequences of miscarriage. Therefore, women should try to self-regulate their mood during pregnancy, maintain a cheerful and positive attitude, and participate in outdoor sports appropriately. Family members and friends should also be more caring and considerate of pregnant women, so that they can spend the whole pregnancy period safely and happily.