Fetal arrest is a condition in which a fetus suddenly stops developing or dies within the mother\’s body. Generally, if it occurs before 20 weeks of gestation, it is called miscarriage, and if it occurs beyond 20 weeks of gestation, it is called fetal arrest. The incidence rate of fetal arrest in the fifth month of pregnancy is lower than that in the previous months. However, the occurrence of fetal arrest is related to many factors, such as the age of the pregnant woman, physical condition before pregnancy, etc.