Low progesterone can directly affect the normal development of the fetus, and whether the fetus can be preserved can depend on individual circumstances. Luteal insufficiency in women after pregnancy leads to insufficient progesterone secreted by the corpus luteum. If there is a lack of progesterone, the fetal development will become delayed and abnormal fetal development may occur such as miscarriage and fetal abortion, etc. Most women supplement progesterone appropriately to allow normal fetal development. If progesterone is too low and no primitive fetal heartbeat is found in ultrasound examination, there is no need for fetal preservation. In women with ectopic pregnancy or biochemical pregnancy with low blood progesterone test values, diagnosis can be made in combination with clinical manifestations, such as the presence of vaginal bleeding and abdominal pain, to avoid delaying treatment. If the progesterone value is abnormal, you should go to the hospital to see the doctor in time, cooperate with the doctor for active treatment, maintain a good state of mind and go to the hospital for regular review.