The time required for the opening of the uterus from one to three fingers varies from person to person and is mainly related to the strength of contractions, the condition of the cervix, the size of the pelvis, and the emotions of the pregnant woman, etc. Generally, the opening of the uterus from one to three fingers is called the latent period, which is the longest stage of labor. The incubation period is the longest stage of labor. For first-time mothers, because their cervix is tighter and the cervical canal takes longer to dilate, and because they have no experience in labor, they are relatively nervous, so it may take longer for the opening of the uterus from the first to the third finger than for menstruating mothers, mostly around 6-8 hours. In contrast, the opening of the uterus is relatively relaxed in women who are in labor and have already had experience in labor, so they have a basic understanding of the process and are relatively relaxed, so the opening of the uterus is relatively fast, so the time is mostly 2-4 hours. When the opening of the uterus is about one finger, you can take some food, keep your emotions stable, avoid shouting and save your strength for the delivery stage. If the mother’s water does not break, she can squat and climb stairs appropriately to use gravity to promote the downward movement of the fetus. Excessive mental tension can affect the dilation of the uterine opening, so the mother should learn to adjust her mood and divert her attention to facilitate the progress of labor. If the opening of the uterus takes too long, an oxytocic injection can be given under the guidance of the doctor to facilitate the progress of labor.