It is normal for a woman’s abdomen to gradually grow larger due to the enlargement of the uterus as the fetus grows and develops, and it is not necessarily a sign that labor is imminent. Generally, after 37 weeks of pregnancy, the fetus is full term and gradually approaching the due date and may be close to delivery. At the same time, there will be some symptoms of preterm labor when women are pregnant near the due date, mainly manifested as regular uterine contractions, vaginal blood discharge, etc., as follows: 1, contractions: the uterus began to appear regular contractions, the interval between two contractions gradually shortened to 15 minutes, 10 minutes or even 5 minutes between each contraction, the duration of contractions initially lasted about 20 seconds, and then gradually increased to Redness: 24-48 hours before delivery, the cervical opening begins to move, causing the fetal membrane near the cervical opening to separate from the uterine wall there, and the capillary tube ruptures and a small amount of blood is discharged through the vagina and mixed with the mucus in the cervical canal and discharged; 3. Pregnant women should pay attention to the symptoms of pre-labour and go to the hospital in time to get ready for delivery. Pregnant women should relax, no need to be overly afraid and nervous, and family members should give more comfort and support. Pay attention to rest, avoid excessive fatigue, and eat properly between contractions to save energy and prepare for delivery.