There is no premonition that the fetus may stop, but usually there will be symptoms after fetal arrest, including vaginal bleeding, abdominal pain, loss of fetal movement, diffuse intravascular coagulation, and so on. After the occurrence of fetal arrest, pregnant women are able to feel the slowing down or even disappearance of fetal movement, lack of weight gain or weight loss, disappearance of breast distension and other symptoms, and some pregnant women may experience bloody or watery vaginal discharge. The uterus does not increase in size with the increase of gestational weeks, and the fetal heartbeat cannot be heard or touched during labor and delivery. A stillborn fetus that stays in the uterine cavity of a pregnant woman for too long may also cause maternal coagulation disorders. If the fetus is not expelled after 3 weeks of death, the degenerated placental tissue releases thromboplastin into the mother’s body, activating maternal intravascular coagulation factors, which can eventually lead to disseminated intravascular coagulation. It is recommended that when a pregnant woman experiences symptoms such as decreased fetal movement and abdominal pain, she should seek prompt medical attention to identify the cause and standardize treatment under the guidance of her doctor.