Low progesterone level after pregnancy is considered to be due to problems with the quality of the embryo itself on the one hand, and luteal insufficiency of the ovaries on the other. If the quality of the embryo itself has problems, the level of chorionic gonadotropin in the body will be low after pregnancy, and it will not be able to effectively stimulate the corpus luteum of the ovary to secrete progesterone, and the progesterone level in the body will be low. Although the quality of the embryo is not a major problem, the luteal insufficiency of the ovary will also make the progesterone level in the body too low, which in turn will affect the development of the embryo. If the progesterone level in the body is insufficient after pregnancy, it will easily cause miscarriage if intervention is not carried out in time. Once the diagnosis is clear, progesterone preparations should be used for fetal preservation treatment under the guidance of a doctor, and vitamin E can also be supplemented appropriately to regulate the function of the ovaries.