Pregnant women in their third month of pregnancy can register with the obstetrics department, where they can undergo regular maternity examinations in order to follow up on the status of the mother and the fetus. The main components of the maternity checkup include a basic understanding of the pregnancy, observation of the fetus for malformations, and assessment of intrauterine and perinatal infections in the fetus. First, the pregnant woman should go to the obstetrics department for routine tests, including blood pressure, weight, abdominal circumference, blood count, urine count, and ultrasound, in order to get a basic understanding of the pregnant woman and the fetus. Secondly, early Down’s syndrome screening and nuchal translucency scan (NT test) will be performed to help the doctor and the pregnant woman to know if there is any congenital malformation in the fetus. Again, infectious disease and TORCH tests are needed to assess the physical condition of the pregnant woman and the risk of congenital intrauterine and perinatal infections in the fetus, so that early preparation can be made for possible infections during delivery. Finally, it is necessary that in the obstetrics department, the pregnant woman can establish a pregnancy and childbirth file to maintain a good contact between the pregnant woman and her doctor, thus providing assistance for future maternity examinations and pregnancy maintenance.