Water ballooning is a method of inducing labor, not inducing labor. Water ballooning can be painful, but the pain is not significant. The water bag is placed in the cervix and liquid is injected into the water bag to open the cervix, which will cause some swelling and pain, but the pain is not particularly noticeable. If the water bag induces labor successfully, the pregnant woman will enter the state of labor, accompanied by uterine contractions, the pain will be more intense. It should be noted that every woman in labor has a different sensitivity to pain, and the degree of pain felt may vary to some extent. Before placing the water bladder to induce labor, it is recommended that pregnant women communicate in detail with professional obstetricians to understand the precautions of water bladder to induce labor and make good psychological preparation. If the pregnant woman is more resistant to water bladder induction of labor, she can choose other methods of labor induction or catheterization in conjunction with her obstetrician’s advice.