Progesterone represents the progesterone hormone. If progesterone is lowered, it means that the progesterone hormone is lowered in the patient’s body, especially for pregnant women after pregnancy, if the condition of progesterone is lowered, it may cause preterm miscarriage or premature birth, so it needs to be paid attention to. If a pregnant woman has lowered values of several tests and vaginal bleeding, she should take rest and if the values are significantly lower, she can choose progesterone medication under the guidance of a doctor. If the value is low and there is no clinical manifestation, it is necessary to pay attention to rest, maintain a good state of mind, conduct regular recheck of progesterone, and in the event of a significant decrease, timely treatment is required.