Premature labor is the symptom that indicates that labor will soon begin, including the following: 1. false labor: the main characteristics of false labor are short duration of contractions, long intervals, and average intensity of contractions; 2. fetal head descent: most pregnant women feel more comfortable and relaxed in the upper abdomen, and eat more than before; 3. redness: there can be a little vaginal bleeding within 72 hours before labor, mainly because the fetal membrane near the inner cervical opening and This is mainly due to a small amount of bleeding caused by the rupture of capillaries and the peeling off of the uterine wall near the endocervix. The main signs of labor are: 1) regular contractions: the duration of contractions gradually lengthens, the interval gradually shortens, and the intensity of contractions gradually increases; 2) dilatation of the uterine opening: can be determined by vaginal examination or anal examination; 3) fetal head descent; 4) rupture of fetal membranes: when the pressure in the amniotic cavity increases to a certain degree, the fetal membranes can rupture naturally, and normal rupture of membranes mostly occurs when the uterine opening is fully opened.