Early in pregnancy, especially between 8 and 12 weeks of gestation, the fetus is prone to stop developing in the uterine cavity. During this period, the corpus luteum of pregnancy starts to shrink while the placental function cannot keep up, resulting in the embryo not being supported by progesterone and nutrition, there is a possibility of fetal arrest or miscarriage. The main reasons for this are as follows: 1. Most of the reasons for fetal arrest are due to chromosomal abnormalities, and such abnormalities generally have an obvious impact in early pregnancy. 2, the fetus is not very stable in the uterine cavity in early pregnancy and is easily affected by adverse factors such as viral infection, drugs and radioactive damage, and the fetus stops developing. 3, the uterus is sensitive in early pregnancy, and strenuous sports, heavy physical labor, stimulation of sexual life, emotional fluctuations, etc. are likely to induce uterine contractions and cause fetal arrest. Fetal arrest is mostly the result of natural elimination due to poor embryonic development. Pregnant women in early pregnancy should adjust their physical condition, try to avoid the stimulation of adverse factors in life and do a good job of prevention. Once the diagnosis of fetal arrest is confirmed, if spontaneous abortion does not occur, surgical scraping is needed in time to remove the aborted fetus and residual tissues in the uterine cavity to avoid more serious conditions such as infection and bleeding.