Progesterone, also known as luteinizing hormone, is a biologically active natural progesterone secreted by the corpus luteum of the ovary, which plays an important role in the implantation of the fertilized egg and pregnancy, and is necessary for the maintenance of pregnancy. A sufficient amount of progesterone not only ensures the normal function of the endometrium and promotes the normal development of the embryo, but also has anti-rejection and inhibits uterine contractions, thus ensuring the smooth and normal development of the fetus in the uterus until full term. If progesterone is too low, it usually indicates luteal insufficiency or premature luteal decline, resulting in poor secretion of the endometrium, which leads to difficulty in the implantation of the pregnant egg or early miscarriage and inability to maintain the pregnancy. If you have low progesterone, it is recommended to visit a hospital and take natural progesterone supplements under medical advice to maintain pregnancy, and increase food such as soy to assist in increasing progesterone. Progesterone is only a reference indicator for the maintenance of pregnancy, not an absolute indicator. Progesterone is also not a universal birth control drug, and is only suitable for patients with preterm miscarriage caused by progesterone deficiency. For miscarriage caused by poor or abnormal fetal development due to adverse genetic factors, environmental factors, maternal diseases, etc., progesterone cannot be used for birth control treatment. In addition, during the course of progesterone fertility treatment, pregnant women need to have regular follow-ups and adjust the dosage of medication at any time.