The normal range of progesterone values in early pregnancy is 4.73-50.74ng/ml. Progesterone is an important progesterone that not only plays an important role in the regulation of the menstrual cycle, but is also a hormone necessary for the maintenance of pregnancy. Progesterone is mainly produced by the corpus luteum and originates mainly from the placenta during pregnancy, and is an intermediate in the biosynthesis of testosterone, estrogen and adrenocorticotropic hormone. Progesterone acts primarily on the corpus luteum during pregnancy, regulating the synthesis of prostaglandins in that tissue. The main effect of progesterone is to promote the thickening of the endometrium, causing the blood vessels and glands therein to proliferate and causing secretion to allow for the fertilization of the egg. If progesterone is lowered, there is a risk of miscarriage due to immune rejection of the fetus by the mother. Progesterone also promotes the development of mammary follicles and ducts in preparation for lactation. Progesterone measurements are used to determine ovulation, to monitor progesterone therapy, and to evaluate early pregnancy. Progesterone values will continue to rise as the pregnancy lengthens, and each person’s body type is different, and the values of progesterone are not exactly the same. During pregnancy, you should pay attention to rest more, at the same time, you should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.