Unable to control emotions and crying all the time in pregnancy are caused by both intrinsic and extrinsic reasons, which have an impact on both the pregnant woman and the fetus, so do psychological guidance according to the specific situation and treat accordingly. Common causes 1, intrinsic reasons: high mood swings after pregnancy are closely related to changes in hormone levels, with the development of pregnancy, the level of estrogen, progesterone and thyroid hormone secreted by pregnant women gradually increases, which can be manifested as depression, anxiety, desire to cry, sensitivity, high mood swings, etc.; 2, extrinsic reasons: the increase in dietary intake of women during pregnancy, coupled with the combined effect of a variety of hormones during pregnancy, resulting in protein and fat increased synthesis, water and sodium retention, resulting in swelling and changes in body shape, and pregnant women cannot accept the huge changes in body shape, which may lead to depression. In addition, when women find out they are pregnant, they usually have mixed feelings and excessive thoughts, especially older mothers-to-be, who are more prone to tension, thus feeling uneasy and anxious, and even emotional out of control and often cry. Treatment 1, good psychological guidance: give pregnant women enough care and support, if pregnant women are in a long-term depressed state, they must consult a psychiatrist and effectively relieve the distress caused by bad mood by using cognitive therapy and relaxation therapy; 2, drug therapy: if the patient’s symptoms are heavy and seriously threaten the health of mother and child, they can be treated with small doses of antidepressant drugs under the guidance of a doctor.