The fetal head position, that is, the fetal position. In general, the fetal head is flexed, the forehead is close to the chest wall, the spine is slightly curved forward, the limbs are flexed and crossed in front of the chest and abdomen, and the whole fetal body is in an oval shape with a small head end and a large buttock end, which is the normal fetal position. I. Classification of fetal malposition Fetal malposition can be divided into three categories, including: 1. head malposition: including face first, frontal first, occipital posterior first; 2. breech malposition: including mixed breech first, single breech first, single foot first, double foot first, single knee first, double knee first; 3. transverse malposition: mainly refers to shoulder first. The fetal position can be caused by a variety of reasons, the common reasons are as follows: 1, the fetus in the uterine cavity range of activity is too small: such as too little amniotic fluid, maternal abdominal wall tension, uterine malformation, multiple births, etc.; 2, the fetus in the uterine cavity range of activity is too large: such as too much amniotic fluid, maternal abdominal wall relaxation or smaller fetus, etc.; 3, the fetal head articulation obstruction: such as pelvic stenosis, placenta praevia, umbilical cord is too short, etc. How to judge the normal position of the fetal head The fetal head position can be judged according to the following: 1, according to the position of fetal movement: normal fetal position fetal movement is basically above the belly button, or left and right, the lower abdomen is almost not moving, abnormal fetal position is more obvious lower abdomen fetal movement; 2, according to hiccups judgment: left and right lower abdomen hiccups is the head position, other positions suggest that the fetal position may exist fetal malposition; 3, Judgment according to clinical examination: physical examination, such as four-step palpation, can check the size of the uterus, fetal delivery style, fetal previa, fetal orientation and whether the previa is articulated. Imaging examination, such as ultrasound examination, can visually determine the situation of the fetus in the uterus. Correction of fetal malposition Once the fetal malposition is found after examination, it can be corrected by the following methods: 1. knee-chest exercise: once a day in the morning and once in the evening, for 10 minutes each time, for 1 week, on a hard bed, with the chest and knees on the bed, the hips raised, the thighs and the bed vertical, the chest should be as close to the bed as possible; 2. external inversion: generally after 32-34 weeks of pregnancy, go to the hospital and have the doctor invert the fetus by hand pushing and other actions. The fetus can be inverted by hand pushing and other movements. This method requires professional skills, pregnant women should not operate at home; 3, other treatments: such as increasing the number of walks, abdominal rubbing, turning the waist and other gentle activities, forbidden to eat cold and flatulent food, etc.