If a woman has slow fetal development in early pregnancy: the first one is related to malnutrition caused by women’s lack of food; the second one is slow development of fertilized eggs or poor endometrial environment, which can affect fetal development; the third one is related to the existence of fetal congenital underdevelopment and embryonic abortion. Therefore, when a woman has slow fetal development in early pregnancy, she should get enough rest, increase nutrition, keep her mood relaxed, go to the hospital for gynecological ultrasound and blood test of chorionic gonadotropin and progesterone level if necessary. After the fetus is developed in accordance with the gestational week, it can be reviewed regularly. If embryonic abortion occurs after fetal preservation, the pregnancy should be terminated in time.