It is recommended that women wait at least 3-6 months after receiving the nine-valent cervical vaccine before considering pregnancy to minimize the possible effects on the fetus. The nine-valent cervical vaccine is used to prevent the development of cervical cancer in women and can effectively reduce the incidence of cervical cancer with an efficiency of 90%-92% and fewer adverse reactions. Some patients may experience fever during the immunization process, which may lead to viral infections and may affect the fetus during pregnancy. Although the nine-valent vaccine is a sterile, active vaccine and there is no research data to suggest that it can cause adverse effects on pregnant women and fetuses, for safety reasons, it is recommended that pregnancy be considered 3-6 months after the vaccination. Women need to stay away from radiation environments such as CT, MRI, etc. during pregnancy preparation. After the nine-valent vaccine is administered, a physical health check-up must be performed before planning to become pregnant and the check-ups must all be passed before pregnancy can be considered.