The yolk sac keeps growing without fetal heart may be a normal manifestation caused by the early time of examination, or it may be a pathological manifestation caused by embryonic arrest. After pregnancy, if the time of pelvic ultrasound examination is relatively early, there may be yolk sacs growing in the uterine cavity, but the fetal heart and buds are not yet fully developed, which may cause yolk sacs growing but no fetal heart, which is a normal manifestation and does not require special treatment. In some pregnant women, if the yolk sac keeps growing but the fetal heart and buds have not developed after dynamic testing, it may be due to chromosomal abnormality of the embryo or other causative factors that cause embryonic arrest, which may need to be removed from the uterus for treatment.