A value of progesterone above 30ng/ml on the 53rd day of pregnancy is considered normal. If the menstrual cycle is regular, on the 53th day of pregnancy, that is, 53 days after menopause, the value of hcg will rise to about 100000IU/L. It is not only necessary to test whether the degree of elevation of the level of hcg and progesterone is in accordance with the gestational week, but the key also needs to look at the gynecological ultrasound to see whether the development of the gestational sac in the uterine cavity is full as well as whether the pulsation of primordial cardiac tube is good. If the value of progesterone is lower than 15ng/ml on the 53rd day of pregnancy, most of them have lower abdominal pain, vaginal bleeding and other preeclampsia, suggesting that the ovarian corpus luteum secretes insufficient progesterone, and women need to be given progesterone drugs to protect the fetus in a timely manner. Progesterone is less than 6ng/ml, most of the spontaneous abortion will occur, the birth control is not successful.