As long as the amniotic fluid flows out, it is considered to be water breakage, and it has nothing to do with the amount of water flow. Water breakage can be determined by the symptoms of the pregnant woman and relevant examinations. Water breakage is the rupture of fetal membranes leading to the outflow of amniotic fluid. Symptoms vary according to the amount of water flow, and common symptoms include the pregnant woman’s self-consciousness of wetness in the vulva, the pregnant woman’s sudden sensation of fluid coming out of the vagina, etc. Sometimes, fetus fat can be seen in the outflow of fluid, such as feces. Methods used to check the water breakage include: ① speculum dilation of the vagina can be seen in the vaginal fornix pool of liquid; ② water breakage ultrasound check amniotic fluid is less than the amount of pre-breakage amniotic fluid; ③ PH test paper to determine the vaginal fluid PH ≥ 6.5; ④ vaginal fluid inspection can be seen in the amniotic fluid crystals, and so on. If the patient’s water breaks, in order to prevent prolapse of the umbilical cord, it is necessary to stay in bed immediately and consult the doctor in time, and follow the doctor’s instructions for treatment.