Progesterone greater than ≧25ng/ml suggests that the embryo has a good intrauterine pregnancy, so maintaining progesterone at 40ng/ml is a good performance. In women before the 12th week of pregnancy, serum progesterone levels remain between 20-30ng/ml has been sufficient to use, the release of progesterone is a pulsatile release, and due to the different function of individual progesterone receptors, instantaneous progesterone value does not fully reflect the total amount of progesterone in the blood, the current clinical value of progesterone is no longer so much attention, pay more attention to the doubling of the blood HCG. Pregnant women should pay attention to the prenatal examination during pregnancy, actively listen to the advice of professional doctors to do a comprehensive nursing care, pay attention to more rest, at the same time should be relaxed, to avoid tension, anxiety. For clinical examination of low progesterone, and vaginal bleeding, abdominal pain, etc., should promptly go to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor symptomatic treatment.