There is no clear clinical evidence to prove that vaccination with the New Crown Vaccine can affect the development of the fetus, and the decision needs to be made on a case-by-case basis. If the pregnant woman does not have a severe allergic reaction to the vaccine and the embryo develops normally, the fetus can be retained, but regular checkups and follow-up visits are required. If the pregnant woman has a severe allergic reaction and the embryo is not developing normally or the quality of the fetus is not good, it is not recommended to keep the baby and take appropriate measures to terminate the pregnancy. The New Crown vaccine has been around for a short time and has not been tested in pregnant women. If pregnancy is detected after vaccination, the patient should not only carefully monitor the vaccination site for symptoms such as redness, swelling, fever, nausea, dizziness, vomiting, etc., but also undergo regular pregnancy checkups. In conclusion, it is recommended that pregnant women should seek timely medical treatment for detailed examination and make a decision based on the specific condition of the fetus.