The insertion of a water bladder is the placement of a water bladder in the uterine cavity to induce effective contractions, and is mostly used for women who have had a normal delivery at more than 40 weeks of pregnancy. The pain that is felt during the insertion of the bladder varies from person to person, depending on their body type and sensitivity to pain, and the pain level varies from person to person. Usually, the pain of stuffed water bladder can reach 7-8 level, which is equivalent to the pain when opening 2-3 fingers or 3-4 fingers, most of the mothers can tolerate it, if it cannot be relieved by deep breathing and relaxing the spirit, it is recommended to remove the water bladder. After inserting the water bladder, if there are paroxysmal painful contractions, indicating that the opening of the uterus is gradually dilating, it means that the water bladder plays its role and there is no need to worry too much. If there is no response for more than 24 hours or the pain is more intense after the bladder is inserted, the doctor should judge whether it is necessary to remove the bladder to avoid tonic contractions, which may cause intrauterine distress and danger to the fetus or placental abruption, which may endanger the life of the fetus. It is recommended to keep good hygienic habits after the water bag delivery, and the mother should rest in bed, not to engage in heavy physical labor during this period, and forbid to take a tub bath to prevent inducing infection. If symptoms such as vaginal bleeding and abdominal pain occur, you need to go to the hospital in time. In daily life, avoid eating spicy and stimulating food, and keep an optimistic attitude, don’t be too anxious and nervous.