Progesterone 10ng/ml at 6 weeks is low, dynamic review is needed, combined with blood HCG and ultrasound to determine the development of the embryo. After pregnancy, serum progesterone will increase with the increase of gestational weeks to maintain uterine stability and facilitate the fertilization of the egg. Progesterone is mainly secreted by the ovarian corpus luteum at 6 weeks of gestation, usually 20-25ng/ml, and 10ng/ml of progesterone is low, but progesterone is released in pulses, and a single low value of progesterone is not clinically significant, and needs to be monitored dynamically, combined with blood HCG and ultrasound to determine the embryonic development. When abdominal pain, vaginal bleeding and other symptoms of preeclampsia occur in early pregnancy, combined with low progesterone, you need to follow the doctor’s instructions to give progesterone, dydrogesterone and other progesterone preparations to protect the fetus, but also pay attention to appropriate rest, prohibit coitus, and review on time.