During this period, due to the secretion of human chorionic gonadotropin by trophoblast cells, some pregnant women may experience nausea and vomiting, mostly in the morning, and may also have symptoms such as aversion to greasy food, lack of food, weakness and drowsiness, and a preference for spicy and sour food or sensitivity to certain odors. Some women are affected by the level of estrogen, progesterone, placental lactogen and chorionic gonadotropin in their body, which may lead to the development of breast ducts, i.e., the enlargement of breast follicles, slight swelling and pain of breasts, enlarged nipples and deepened areola coloring, or emotional changes, such as irritability, nervousness, anxiety and anxiety, which may vary from person to person. These early pregnancy symptoms usually disappear around 12 weeks after menopause, but some pregnant women may experience them throughout their pregnancy. Since early pregnancy is a critical period for embryo formation, pregnant women should pay special attention to stay away from all kinds of ionizing radiation, be careful with medication, avoid stimulation by smoking and alcohol, and take oral folic acid to prevent fetal malformation. The family should give care and love to the pregnant woman and help her relieve the symptoms of early pregnancy.