The amount of progesterone in the body of a pregnant woman over 40 years of age is not fixed, but is different for each individual, and it is necessary to judge whether it is enough or not according to the test results. Mothers over the age of 35 are often referred to as women of advanced maternal age. after the age of 40, ovarian function begins to decline and the amount of various hormones begins to gradually decrease. Adequate progesterone is needed for pregnancy, and insufficient progesterone may result in a bad pregnancy. Progesterone levels in pregnant women over 40 may not be in the normal range, but age is not the only factor that determines progesterone levels. Therefore not all pregnant women over 40 years of age have insufficient progesterone. Progesterone levels need to be tested according to the six hormone tests. If the progesterone level is insufficient, medications such as progesterone, dextroprogesterone, or injections can be taken under the direction of a physician. Pregnant women during pregnancy should pay attention to do a good job of prenatal checkups, actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, pay attention to rest, at the same time should be relaxed, to avoid nervousness, anxiety, there is any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.