In most cases, the presence of a fetal bud without a fetal heartbeat is related to fetal arrest, but it may also be due to the fact that the fetal heartbeat has not yet appeared due to the short period of pregnancy, so it is theoretically possible to save a fetal bud without a fetal heartbeat. For women with regular periods, an ultrasound on day 45 of menopause can reveal a fetal bud and a primitive fetal heartbeat. However, some women have irregular menstruation or late ovulation, resulting in late fertilization of the egg, which may delay the appearance of the fetal bud and heartbeat. Therefore, women with fetal buds but no fetal heartbeat can have blood tests for HCG and progesterone, and if the results of these two tests are normal, the ultrasound will be repeated in one week. If there is a primitive fetal heartbeat after one week, it means that the embryo is developing normally. However, if the progesterone value is low, you can take medication to preserve the fetus under the guidance of the clinician. If only the fetal bud but no fetal heartbeat appears after one week, then there is no need to preserve the fetus in this case, and the embryo should stop developing completely and needs to be cleared in time. The woman should not be too nervous after the pregnancy, the mood is very influential to the development of the embryo. It is also advisable to have a comprehensive physical examination before pregnancy to rule out the possibility of hereditary diseases or chromosomal abnormalities.