Fetal position LSA refers to sacral left anterior fetal orientation in clinical practice, which is an abnormal fetal orientation, i.e., fetal malposition. General fetal position LSA fetus in the pregnant woman, the buttocks first into the pelvis, began to enter the pelvis. The head is in the upper abdomen of the pregnant woman, the face is on the right side of the pregnant woman and the back is on the left side of the pregnant woman. In addition to this, there are other types of fetal position, such as occipital left anterior LOA, occipital right anterior ROA, sacral left posterior LSP, sacral right transverse RST and so on. For pregnant women with fetal position LSA, if it is early or middle pregnancy, there is usually no need to worry too much, and usually no need to take special intervention, the fetus can correct the abnormal fetal position through its own activities. However, if it is the late stage of pregnancy, timely intervention is needed to help the fetus correct the abnormal fetal position, such as adopting the knee-chest position and so on. It is recommended to do so under the guidance of a professional doctor to avoid affecting the pregnant woman and the fetus.