Regular contractions but the mouth of the uterus does not open may be caused by short contraction time, cervical immaturity, cervical abnormality, etc. Depending on the situation, we need to choose the treatment such as patience, medication or cesarean section. 1. Short contraction time: For women who are in labor for the first time, it usually takes 11-12 hours from the beginning of regular contractions to the opening of the mouth of the uterus, so regular contractions but the mouth of the uterus does not open may be due to a short period of time in labor, which is considered a normal phenomenon in the absence of other abnormal symptoms. In this case, you can wait patiently and take a walk to help the uterus open. 2. Cervical immaturity: If there are regular contractions but the uterine opening does not open, it may be due to the cervix being immature, hard and not easy to dilate, etc. In this case, the doctor will take a look at the cervical condition of the mother. In this case, the doctor will use prostaglandin preparations or mechanical dilatation to promote cervical ripening, depending on the condition of the mother. 3. Cervical anomalies: Cervical anomalies such as cervical adhesions and scarring, cervical edema and cervical cancer can also lead to prolonged non-opening of the opening of the uterine orifice, a condition that may seriously affect labor and threaten the health of the fetus. Once this happens, the doctor will decide whether a cesarean section is necessary to ensure the health of the mother and the fetus according to the specific condition of the pregnant woman. After entering labor, it is important to seek medical attention for follow-up treatment by a professional doctor.