Early pregnancy ultrasound can be divided into general uterine and appendage examination, which costs RMB 100; intracavitary ultrasound uterine and appendage examination, which costs RMB 150; early pregnancy ultrasound can help determine the due date and gestational week, mid pregnancy, 11-13 weeks plus 6 days, fetal NT screening, which costs RMB 180; 20-26 weeks of pregnancy, 4-dimensional ultrasound examination, which costs RMB 320; 30-32 weeks of pregnancy, 3-dimensional ultrasound The cost of the examination is RMB 280; the cost of the general uterine fetal and appendage ultrasound examination in other time periods is RMB 140. The ultrasound examination includes the number of fetuses, fetal orientation, fetal heart rate, amniotic fluid volume, placenta position and relationship to the inner cervical opening, the number of umbilical cords and vessels in the umbilical cord, the location of the umbilical cord attached to the placenta, and the measurement of fetal growth pathways. The 3-D and 4-D ultrasound examinations also include examination of fetal structures.