Biparietal diameter at 34 weeks of pregnancy, usually normal at 84cm~93cm. 34 weeks pregnant fetal biparietal diameter normal value of the range of 84cm ~ 93cm, but the biparietal diameter measurement of the gestational week in late pregnancy is a deviation. Biparietal diameter refers to the length of the widest part between the left and right sides of the fetal head, that is, the distance between the temples on both sides of the fetal head, is the longest transverse diameter in the fetal head diameter of the various diameters. In addition, in late pregnancy, the biparietal diameter is also a very useful indicator to determine whether the pregnant woman is able to deliver. At 34 weeks of pregnancy, the fetus is growing and developing rapidly, and its nutritional needs will increase, so you should pay attention to increasing the intake of high-quality protein foods and supplementing a variety of vitamins and minerals. And pay attention to perineal hygiene, wear loose underwear, regular pregnancy tests. For more information, please consult your doctor.