The main purpose of pregnancy test is to rule out the problem of fetal malformation before giving birth, so there are many items that must be done, such as systematic examination in early pregnancy, Down’s syndrome screening, malformation examination, diabetes screening and ultrasound examination. 1. Systematic examination in early pregnancy: Generally speaking, pregnant women should have a systematic examination before the 12th week of pregnancy, which includes height, weight, blood pressure, blood routine, urine routine, blood type, blood glucose, liver function, kidney function, virus and other specific examination items. In addition, pregnant women should also undergo an ultrasound examination to measure the NT value and determine whether there are any malformations in the fetus. 2. Down’s syndrome screening: Pregnant women should undergo Down’s syndrome screening at 16~18 weeks of pregnancy to determine whether the fetus has Down’s syndrome. 3. Detection of malformation: at 24~28 weeks of pregnancy, pregnant women should undergo detection of malformation through ultrasound to rule out the problem of fetal malformation. 4. Diabetes screening: After 24 weeks of pregnancy, pregnant women should be screened for diabetes under the guidance of the doctor. 5. Ultrasound: In late pregnancy, pregnant women should undergo ultrasound once a month to measure weight, blood pressure, uterine height and abdominal circumference, etc. Not only that, but also after 32 weeks, according to the actual situation of fetal heart monitoring. During the pregnancy checkups, pregnant women should strictly follow the doctor’s arrangement and keep a relaxed state of mind so as not to affect the results of the checkups.