Low progesterone does not necessarily lead to miscarriage, which needs to be judged comprehensively with clinical symptoms and previous maternal history. The first trimester of pregnancy is an unstable period for the fetus, so it is important to do a rigorous maternity test. A single blood test alone cannot determine low progesterone, so pay attention to the review. Low progesterone is likely to cause miscarriage, but not necessarily miscarriage. If the examination determines that the progesterone is low, but the pregnant woman herself is not an advanced maternal age, and does not have a history of multiple miscarriages, it may be caused by insufficient luteal function. Through the progesterone and other medications to preserve the fetus treatment, generally can preserve the success of the fetus, the chances of miscarriage is relatively small. In early pregnancy, you should do ultrasound in time to check the development of the fetus and review the doubling of HCG. In daily life, we should take more rest, avoid strenuous exercise, do not be tired, do heavy physical work and so on.