In early pregnancy, the luteal function of the corpus luteum during pregnancy is assessed by a combination of blood HCG and progesterone tests to determine the activity of the intrauterine gestational sac. When the progesterone level is low, but there is no vaginal bleeding and the blood HCG is increasing exponentially, it is possible to continue observation. But in general, when the progesterone value is low, the chances of embryonic abortion and ectopic pregnancy are increased, which may be related to luteal insufficiency and ectopic pregnancy, patients need to go to regular hospitals for obstetrical and gynecological examinations to clarify the cause and carry out the right treatment: 1. Luteal insufficiency: progesterone is lower than 25ng/ml, there may be luteal hypofunction and insufficient progesterone secretion, which may easily cause embryonic dysplasia, preterm abortion and embryonic arrest. If progesterone is very low, it can be combined with ultrasound examination and blood HCG for comprehensive analysis to identify whether it is ectopic pregnancy, and if ectopic pregnancy is confirmed, the pregnancy should be terminated under the guidance of doctors. Pay attention to a healthy diet in daily life and eat more fruits and vegetables rich in vitamin C and vitamin E, such as kiwi, grapefruit and tomatoes; ensure sufficient sleep and avoid fatigue.