When a pregnant woman has regular contractions, and the frequency of contractions reaches 2-5 times in 10 minutes, accompanied by pain, it indicates that labor may be imminent. Some pregnant women have weak contractions due to various reasons and cannot have frequent and gradually accelerated contractions, while some menstruating women have less frequent contractions, but once the frequency of contractions is accelerated, they will face labor immediately, so you can’t judge whether labor is imminent simply by contractions, but by combining with the pregnant women’s own situation. 1.Normal Contractions in labor: clinically, the process of female labor is divided into three stages of labor, when entering the first stage of labor, the frequency of contractions is about 5-6 minutes / time, the duration of about 30 seconds. With the progress of labor, contractions gradually increase in intensity, frequency and duration. When the opening of the uterus is complete, that is, the second stage of labor, the contraction frequency is about 1-2 minutes/time, and the duration can last for 1 minute, in this case, it is about to deliver. At this time, the cervical opening is dilated, the head is raised and lowered, and the pregnant woman can complete the delivery by holding her breath with the doctor. 2. abnormal contractions in labor: in the process of delivery, there are some conditions, such as problems with the fetus itself, or the mother’s pelvic cavity is narrow, the uterus or vaginal structure is abnormal, the uterus contraction is weak, etc., causing difficulties in the delivery of the fetus, at this time, the intensity of contractions gradually decreases, the frequency of contractions gradually slows down, and usually requires assisted labor or This is when contractions become weaker and less frequent, and assisted delivery or cesarean section is usually needed to complete the delivery.