The position of the fetus in the uterus is usually fixed slowly after 30 weeks. The majority of fetal positions in pregnant women are head down (cephalic position), while breech position (fetus in utero with buttocks down) is the most common abnormal fetal position. If the fetus is in a breech position, the mother should not be nervous. If the breech position is found before 30 weeks, the baby has a lot of freedom of movement in the womb at this time and will flip around like the Monkey King, so it is still likely to become a head position. If the breech position is found around 30 weeks, we can suggest the pregnant woman to perform chest and knee position for 1-2 weeks (Figure 1) (Method: on a hard bed with legs about 40 cm apart, kneel on the bed, then slowly approach the bed with shoulders in a lying position, but the thighs must be perpendicular to the bed surface. 15 minutes each morning and evening, a week for a course of treatment. To adhere to oh.) This gives the fetus a chance to turn into the cephalic position in the uterus on its own. However, if you notice abnormal fetal movement during the period of chest and knee position, you should come to the hospital for observation. If you find that you are still in breech position after 32 weeks, it is recommended that you rest more and avoid running and jumping to avoid premature rupture of membranes and umbilical cord prolapse. Regarding the mode of delivery, if the breech position is a single breech first exposure (see Figure 2), the baby’s buttocks are bare and pointed, and the baby is not big, and the pregnant woman is willing to try to deliver vaginally, she can deliver vaginally. Of course, at present, for safety reasons, the vast majority of pregnant women undergo a cesarean section if a breech position occurs.