The probability of fetal arrest after having fetal heart and buds is generally small, but embryonic arrest may also occur, such as when the pregnant woman’s health is poor, or when the pregnant woman is exposed to harmful substances. In early pregnancy about 6~7 weeks, if the fetal heart and buds are seen through ultrasound, it means that the fetus is alive, and the probability of embryonic arrest is generally smaller. However, the embryo is not stable in early pregnancy, and if the pregnant woman’s health is poor, or if she is exposed to substances harmful to the fetus during this period of time, it may lead to the occurrence of embryonic arrest. If a pregnant woman experiences symptoms such as abdominal pain and vaginal bleeding during pregnancy, it is recommended that she seek medical attention in a timely manner, and under the guidance of a doctor, complete the relevant examinations to clarify the cause of the disease and treat the symptoms.