Ultrasound at 35 weeks +2 weeks shows that the dilatation of the fetal intestine is about 15mm wide, and the lack of endocardial sound may be caused by the accumulation of fetal feces, or it may be considered to be caused by fetal intestinal obstruction, intestinal malformation, and other factors. If pregnant women undergo ultrasound examination at 35 weeks + 2 and find that the dilatation of the fetal intestine is 15MM wide, the first consideration is that the fetal feces and amniotic fluid temporarily accumulate in the fetal intestine, usually this kind of situation can be cured by itself, and pregnant women do not need to worry too much. However, it is also necessary to consider that the fetal digestive tract is abnormal, thus causing intestinal obstruction. If the dilatation of the intestinal canal is about 15mm wide due to fetal intestinal obstruction, the dilatation of the intestinal canal will gradually increase with the development of the disease, which should be taken seriously. It may also be caused by congenital intestinal malformation of the fetus, which requires further examination after the birth of the fetus so as to clarify the cause of the disease. If the dilatation of the fetal intestine is about 15mm wide after ultrasound examination at 35 weeks +2 weeks, the pregnant woman should go to the regular hospital to have the cause of the disease clarified. Pregnant women need to go to regular hospitals to clarify the cause of the disease and take treatment measures under the guidance of doctors.