The normal reference value for blood HCG dilution is related to the number of weeks of gestation and varies from person to person. Whether it is normal or not cannot be generalized, taking into account the pregnancy period, the measured value and the growth. During pregnancy, the HCG level increases significantly. Since the concentration of HCG in the blood is particularly high, direct measurement is prone to error, so it is necessary to dilute the blood a certain number of times before doing the test, and then multiply the result obtained from the test by the number of times diluted to obtain a more accurate HCG value, which is called blood HCG dilution. The normal reference value should be judged with the week of pregnancy, 500-10000 IU/L in 3-4 weeks, 1000-50000 IU/L in 4-5 weeks, 10000-100000 IU/L in 5-6 weeks, 15000-200000 IU/L in 6-8 weeks, 10000-100000 IU/L in 2-3 months. 25 IU/L can indicate pregnancy, and the blood HCG value should be doubled in 2-3 days, which indicates a higher possibility of successful pregnancy. However, for a clear diagnosis, further ultrasound examination is recommended to determine the location of the gestational sac to exclude ectopic pregnancy, and the detection of rhythmic fetal heartbeat and fetal bud in the gestational sac can clearly diagnose a successful conception. During pregnancy, take care not to overwork, develop a good work and rest schedule, and go to bed on time. Eat a reasonable diet with nutritious foods rich in protein and vitamins, such as soy products, milk, lean meat, fruits and vegetables.