In a normal pregnancy, trophoblast cells are formed and begin to secrete human chorionic gonadotropin a few days after the fertilized egg is laid, and serum human chorionic gonadotropin gradually rises as the gestational week increases. If the serum HGH is abnormal, it indicates the possibility of preterm abortion. In pregnancy, luteal insufficiency leads to poor development of the embryonic sac and appendages, resulting in insufficient secretion of human chorionic gonadotropin by the trophoblast; and insufficient secretion of progesterone due to lack of sufficient human chorionic gonadotropin stimulation by the corpus luteum of pregnancy. Therefore, low chorionic gonadotropin and low progesterone are most likely to indicate preterm abortion, and early treatment is necessary in such cases. In addition to medication, progesterone or human chorionic gonadotropin injection and vitamin E for fetal preservation, dietary therapy is also the best way to treat abnormal serum human chorionic gonadotropin. You can take pectin and dietary fiber-rich foods as appropriate. Low chorionic gonadotropin often leads to a small amount of vaginal bleeding, which indicates the possibility of miscarriage and should be treated actively until the vaginal bleeding stops.