Usually, regular contractions can occur 24-48 hours after the first sight of redness, and then labor will begin, but very few women start labor only about 1 week after the first sight of redness. Therefore, there are individual differences in the time of delivery after redness, and no generalization can be made. Vaginal redness is caused by the rupture of the placenta and the tiny blood vessels at the edge of the cervix, and the discharge may be accompanied by a cervical mucus plug. Redness is a sign of cervical maturity and occurs within 24-48 hours before labor in most women, and within a week in a few. Although redness is a reliable sign that labor is about to begin, it is not a sign that labor has started, so pregnant women should not be too worried and anxious. However, if the amount of vaginal bleeding is more than the usual amount of menstruation, it should not be considered as redness and should be considered as late pregnancy bleeding, such as placenta praevia or placental abruption. In conclusion, it is recommended that pregnant women pay close attention to the fetal movement and abdominal pain after seeing red, and if there are regular contractions, they should be hospitalized in time for delivery.