The best time to correct the knee-chest position is to do it early in the morning or in the evening on an empty stomach, and it is best to wear loose and comfortable pajamas so that the pregnant woman feels more comfortable, and it is also conducive to the movement of the fetus in the uterus. Generally after the 28th week of pregnancy, you need to check the fetal position, because the fetal position is basically fixed after 28 weeks. If it is found to be in breech or transverse position, and there is no umbilical cord around the neck, the fetal position can be corrected through the knee-chest position. With umbilical cord wrapped around the neck, knee-chest recumbent position is not allowed, so as not to make the umbilical cord wrap more seriously, resulting in the risk of fetal hypoxia, and can only let nature take its course, and in a few cases, it may be naturally converted to the cephalic position. Before the knee-chest position, you need to let the pregnant woman finish urinating, loosen the pants belt or wear elastic clothes, 2-3 times a day, each time for about 15 minutes, and you need to go to the hospital to recheck the fetal position after 1 week of continuous correction.