Natural progesterone is a kind of progesterone, which is secreted by the ovaries, that is, progesterone. Under normal circumstances, the ovaries will secrete progesterone, and the highest amount is secreted during the luteal phase after ovulation, in order to maintain the physiological characteristics of women, which can promote the thickening of the endometrium to provide conditions for the arrival of menstruation or embryo implantation. After pregnancy, natural progesterone is very important to maintain the normal development of the embryo. If the progesterone value in the body is low, it is likely to cause uterine contractions, which will affect the normal development of the embryo or even miscarriage, and progesterone is often used during clinical fertility treatment. In daily life progesterone has a high content in many foods, such as beans, especially the highest content in black beans, eggs, kiwi, figs, etc., also contains a certain amount of plant progesterone, in the drug progesterone injection is a natural progesterone.