Drinking soy milk can supplement progesterone, or progesterone, because soy milk contains a large amount of soy isoflavones, which is an all-natural plant hormone with no side effects, and can supplement progesterone in moderation. The progesterone content in food is relatively small, and if it is to play a role in the preservation of the fetus, it is necessary to use progesterone as much as possible to ensure the health of the fetus, and not to rely solely on food therapy for treatment, because the effect may be minimal. It is not possible to rely solely on dietary therapy, as the effect may be minimal and may only slightly improve, not achieve a therapeutic purpose. If the menstruation is delayed for a long time due to progesterone deficiency, it is necessary to regulate the cycle manually as much as possible to restore the cycle to normal, and it may be better to drink soy milk along with oral medication.