The clinical term labor is usually used to refer to the onset of labor, which is marked by regular and gradually increasing uterine contractions lasting 30 seconds or more, with a 5-6 minute interval, accompanied by progressive loss of the cervical canal, dilatation of the uterine orifice, and descent of the fetal preluteal area, and which cannot be inhibited by sedation. The whole process of labor, from the beginning of regular contractions to the delivery of the fetus and placenta, is divided into the first, second and third stages of labor, with the first stage being the beginning of regular contractions until the opening of the uterus, the second stage being the delivery of the fetus and the third stage being the delivery of the placenta. The third stage of labor is the delivery of the placenta. Pregnant women in labor usually have symptoms such as redness and water breakage. If you experience any of these symptoms, it is recommended that you seek medical advice and under the guidance of your doctor, complete the relevant examinations and prepare for the delivery of your baby.