If the uterus does not open and the stomach is always tight, it may be physiological contractions or labor with precursor, usually no special treatment is needed, just pay attention to observation. If the uterine opening is not open and your stomach is tight, you can do proper exercise under the guidance of your doctor to promote labor and delivery, or consider a cesarean section if necessary. 1. Physiological contractions: i.e. false contractions, the stomach is tight, but the uterus does not open, and there are no other symptoms, which is a normal physiological phenomenon in the late stage of pregnancy, and does not require special treatment. 2. Pre-eclampsia: If the stomach is tightened regularly, the number of contractions continues to increase, and the vagina starts to bleed a little, it may be a sign of pre-eclampsia, and the mouth of the uterus opens slowly, so pay attention to observation. 3. Mid-pelvic stenosis or oversized fetal head: If the mid-pelvic stenosis or oversized fetal head causes the stomach to be always tight, the head of the fetus descends slower, and the mouth of the uterus opens slower. If the mouth of the uterus does not open for a long time, you can do appropriate exercises, such as walking, doing simple yoga, etc., to promote the delivery of the fetus, and consider cesarean section if necessary. If the mouth of the uterus does not open and the stomach is always tight, it is recommended to go to a regular hospital in time for consultation and examination to clarify whether to take measures to help labor.