It is inaccurate to judge the severity of progesterone as low as 7ng/ml alone. It needs to be evaluated in conjunction with the week of gestation, human chorionic gonadotropin (HCG) level, ultrasound and so on. 1. Combined with the gestational week: the secretion of progesterone in the early pregnancy is pulsatile release, fluctuates widely, sometimes as low as 5ng/ml. progesterone is basically in a stable state in 6-10 weeks of gestation, and then physiologically decreases in 7-9 weeks of gestation, and then rises again. 2. Monitor the blood HCG level: If the progesterone is low, but the blood HCG doubles well, and there are no other uncomfortable symptoms, it does not mean that there is a problem with the development of the embryo. If progesterone is low and HCG is not rising well, it should be taken seriously. 3. Combined with ultrasound: ultrasound is the gold standard for determining intrauterine pregnancy, through ultrasound can dynamically monitor the development of the embryo, ultrasound, if it suggests that the development of the embryo is good, low progesterone do not have to worry too much. Therefore, it is not possible to judge the severity of progesterone level alone, not to mention the development and prognosis of the embryo, so it is recommended to consult the hospital in time and follow the doctor’s advice.