Embryonic development is often determined by measuring blood HCG and progesterone values in the early stages of pregnancy. The normal value of progesterone in early pregnancy is 63.6-95.4 mol/l, while the HCG value is doubled. During pregnancy, the check blood HCG is high and progesterone value is low, there are the following possibilities: 1, HCG high doubling good at the same time progesterone low: If blood HCG is high and doubling growth every other day, consider embryo development is good, at this time, progesterone value is low, may be luteal malfunction, if ultrasound examination has been determined to be intrauterine pregnancy, can be supplemented with progesterone under the guidance of the doctor for fetal preservation treatment, pay attention to rest, and If the progesterone level is low and the ultrasound has confirmed intrauterine pregnancy, you can take progesterone supplements for fetal preservation treatment, pay attention to rest, avoid overexertion, and review again to ensure good fetal development. 2. Ectopic pregnancy may be life-threatening and can be treated by surgical removal if necessary. 3. High HCG but declining on review with low progesterone: If the blood HCG is high but continues to decline on review and progesterone is also at a low value, consider whether there is a pre-eclampsia or spontaneous abortion, and it is generally not recommended to blindly keep the pregnancy.