The absence of a fetal heart after vaccination with the new crown-rumping vaccine requires prompt medical attention and treatment measures such as induction of labor. According to the current literature and clinical data, it has not been proved that the New Crown Vaccine affects the normal development of the embryo, so if there is no fetal heartbeat after receiving the New Crown Vaccine, you need to consult a doctor in time and undergo the relevant ultrasound and other examinations to rule out the possibility of your own disease. Common diseases that can cause fetal arrest include uterine malformation, progesterone deficiency, chromosomal abnormality, poor embryonic development, etc., all of which can lead to the emergence of such a situation, so you need to be guided by the doctor into the progesterone, ultrasound and other professional examinations, if the fetal arrest is before the 12th week, the general choice of medication or surgical abortion, and conduct relevant genetic examination. If after 12 weeks, labor can be induced, according to the doctor’s instructions.