The following tests should not be done during pregnancy: 1) Radioactive examination, which requires the use of radioactive materials and has a certain degree of radioactivity that not only affects the health of the pregnant woman, but also is not conducive to the growth and development of the fetus. 2) Internal gynecological examination, which requires the doctor to perform a palpation examination through the vagina, especially if the technique is too rough and can easily cause preterm abortion or miscarriage. 3) Colposcopy The examination requires the use of a speculum to expose the vagina, which can cause certain stimulation to the vagina of the pregnant woman and easily cause diseases. 4. Hysteroscopy and laparoscopy require the lens of the laparoscope to be placed into the uterine or abdominal cavity, which can cause certain stimulation and impact on the uterus of the pregnant woman and easily cause miscarriage or premature birth.