Generally there is no sign before the water breaks, which is manifested by a sudden onset of vaginal fluid, but some pregnant women may experience lower abdominal pain and brown vaginal discharge as a precursor. Water rupture refers to premature rupture of fetal membranes, usually without any signs before it occurs, mostly not accompanied by abdominal pain, manifested as a sudden onset of a larger amount of vaginal fluid, and the amount of vaginal fluid will increase when increasing abdominal pressure. It can be clearly diagnosed by ultrasonography, vaginal speculum examination, vaginal fluid smear examination, etc. It is necessary to go to the hospital in time. Some pregnant women experience mild contraction pain or a small amount of brown vaginal discharge commonly known as redness, followed by water breaking and entering labor. For full-term rupture of membranes, it is necessary to actively induce labor according to the condition of the mother and fetus, and prophylactic use of antibiotics to prevent infection. For those whose membranes have not broken at term, a treatment plan can be formulated based on a comprehensive evaluation of the gestational week, maternal and fetal conditions, and the pregnancy should be terminated at the appropriate time.