In case of progesterone deficiency, women should eat progesterone-containing foods such as royal jelly, peanuts and soybeans, as well as vegetables and fruits containing vitamin C and vitamin E, such as cabbage, beans, green vegetables, apples and bananas, to promote the secretion of hormones and increase the level of progesterone in the body. When a woman is suffering from progesterone deficiency and using fertility treatment, taking food alone is not able to alleviate the problem. It is best to give progesterone capsules or progesterone injections for treatment to replenish the progesterone level in the body in the short term, so as to play a role in fertility preservation. Progesterone is a progesterone that is secreted by the ovarian corpus luteum during the second trimester of pregnancy and by the placenta after the third trimester, and is maintained until the end of pregnancy, which helps to protect the growth and development of the fetus.