Women initially determine early embryonic growth and development by testing the degree of elevation of human chorionic gonadotropin levels in the blood. If low human chorionic gonadotropin is present: i. It is caused by a low level of hormone secretion due to the short duration of menopause. Second, there may be poor embryo quality or insufficient ovarian corpus luteum function, resulting in low secretion of human chorionic gonadotropin levels. 3. It may be that women do not respond to the increase of hormone level in the body. If the chorionic gonadotropin level of women in early pregnancy is low and the embryo is well developed according to the gestational week after examination, it can be temporarily observed first. If the chorionic gonadotropin level is low and the embryo development is slightly delayed, HCG-containing drugs can be given for fetal preservation treatment.