Usually, the umbilical cord is not harmful to the fetus because the number of weeks of entanglement is small and the cord itself is elastic, so there is no need to worry too much. However, if the number of wrapped weeks is high, fetal movement is abnormal and the fetus may show symptoms of hypoxia, it is necessary to seek medical intervention in time, otherwise it may lead to fetal death. Generally, the umbilical cord will cause the following conditions: 1) obstruction of the descent of the fetal dew: the umbilical cord entanglement makes the umbilical cord relatively short and affects the entry of the fetal dew into the pelvis, which may prolong or stop the labor process; 2) abnormal heart rate: the fetal cord entanglement may lead to fetal hypoxia, which may result in abnormal fetal heart rate and frequent variable decelerations in fetal heart monitoring; 3) fetal distress: when the number of weeks of entanglement is too many or too tight, the umbilical cord is stretched or the umbilical cord is compressed during contractions, which may lead to fetal death. When the umbilical cord is stretched or compressed during contraction, the fetal blood circulation may be blocked and the fetus may suffer from hypoxia, resulting in fetal distress. Most of the umbilical cord entanglement is caused by the excessive length of the umbilical cord or excessive amniotic fluid, and most of the umbilical cord entanglement will be at the neck of the fetus, causing the cord to wrap around the neck. Cord entanglement is a common clinical condition during pregnancy, occurring in about 30-50% of fetuses, and there is no need to worry too much about it, as it will not affect the fetus in most cases. It is recommended that pregnant women should count their fetal movements every day and visit the hospital if there is any abnormality, such as too much or too little fetal movement.