Fetal biparietal diameter of 9.3 at 36 weeks is in the normal range. At 36 weeks of pregnancy, the average range of fetal biparietal diameter fluctuates at 8.81±0.57cm, so a 36-week fetal biparietal diameter of 9.3 is within the normal range. After 36 weeks of pregnancy at least once a week obstetric examination, fetal biparietal diameter is with the increase in gestational age and gradually increase, approaching the expected date of delivery of mature fetal biparietal diameter of up to 9.3cm, which is normal, if 36 weeks after the emergence of abdominal pain, vaginal bleeding or effusion, fetal movement abnormalities such as labor, need to be checked at any time. Pregnant women in this period need to control the appropriate diet, increase the amount of moderate exercise, such as walking, up and down the stairs, to prevent the fetus grows too large to affect the smooth delivery. Pregnant women during pregnancy should pay attention to do a good job of prenatal checkups, actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, pay attention to more rest, at the same time, should relax, to 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.