After having a CT in early pregnancy, it may not necessarily lead to fetal malformation, but there is a possibility of teratogenicity, and it is recommended that pregnant women should be on time for pregnancy checkups after having the test. As CT examination is a radioactive examination, the radioactive substances may cause adverse effects on the fetus such as causing fetal malformation. Abdominal CT and thoracic CT usually do not affect the fetus or the pregnant woman significantly. However, pelvic CT examination may have a greater impact on the development of the embryo, which may lead to the occurrence of fetal malformation. Therefore, it is recommended that pregnant women should pay attention to timely pregnancy checkups after CT examination to detect abnormalities in time. If symptoms such as abdominal pain occur after CT in early pregnancy, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.