The more important tests in pregnancy are generally Down’s screening, ultrasound screening and glucose monitoring during pregnancy. 1. Down’s syndrome screening. It is generally recommended that pregnant women need to undergo this test when they are around 16 weeks pregnant by taking blood from the mother to predict whether the fetus has congenital chromosomal abnormalities. If there is any abnormality, further amniocentesis or non-invasive DNA test is needed to confirm the diagnosis. 2. Ultrasonography. At 20-26 weeks of pregnancy, the fetal organs have developed and the amniotic fluid in the uterine cavity is moderate. At this time, it is necessary to go to the hospital to do three-dimensional or four-dimensional ultrasound and other examinations to find out whether the development of fetal organs is normal and whether there are any malformations or anomalies. This examination is more important, and can timely detect fetal deformities and other abnormalities. 3. Blood sugar monitoring during pregnancy. With the improvement of living conditions, the incidence of diabetes during pregnancy has gradually increased, gestational diabetes will jeopardize the health of pregnant women and fetal development, it is generally recommended to go to the hospital to do screening for gestational diabetes during the 24-28 weeks of pregnancy, and once abnormal blood glucose is detected, it is necessary to actively control the blood glucose in order to prevent the development and health of the fetus from being affected. In addition to the above important tests, there are many other tests to be done during pregnancy, such as liver and kidney function, blood routine, fetal heart rate monitoring, etc. It is recommended to go to a regular hospital for regular pregnancy checkups under the guidance of a doctor.