There is no definite conclusion as to how many fingers are difficult to open at the time of delivery for primiparous mothers. Generally, after 3 fingers, the pain of most primiparous women gradually increases, and the time to open the fingers will be prolonged and the difficulty will increase accordingly. From contractions until the opening of the uterus to 10 fingers, that is, to the width of 10 fingers, it usually takes 11-12 hours for primiparous women. From the beginning of regular contractions to the opening of the uterus to 3 fingers, the period of dilatation of the uterus in primigravida is slow, averaging 2-3 hours to dilate 1 finger, and generally takes about 8 hours, which most primigravida can tolerate. The pain will gradually increase from 3 to 10 fingers, usually the medical staff will ask the mother and her family whether to have a painless delivery when the opening of the uterus is 3 fingers, because when the uterus opens to about 5 fingers, as the fetus descends, the contractions will gradually strengthen, the uterus will expand faster and the pain will become more and more intense, even unbearable pain, this process, the new mothers need to experience about 4 hours. This process takes about 4 hours for first-time mothers. The labor is usually longer and more painful, and it is more difficult to open the fingers compared to menstruating mothers. Family members should be patient and encourage the mother. At the same time, you can give her energy supplements. Sometimes the doctor may also advise the new mother to walk around the room to help reduce the time it takes to open the fingers.