To determine whether the amniotic fluid has broken or is leaking can be determined by the color of the fluid, the amount of fluid, the smell, and the pH test paper. 1. The color of the liquid: amniotic fluid is clear and transparent, if there is intrauterine distress, the amniotic fluid may be contaminated by meconium and appear yellow or green. Urine is usually pale yellow. 2. Amount of fluid: If the water breaks at a high level, the amount of fluid coming out may be less, but if the water breaks at a low level, the amount will generally be more. And it is not under the control of the pregnant woman, presenting a continuous vaginal flow. The amount of urine is usually not much, and it is controllable and will not be continuous. 3. odor: amniotic fluid is colorless and odorless, while urine will have an ammonia odor. 4. pH test paper: Use pH test paper to test the liquid, if it does not change color, consider it urine. If the pH test paper turns blue it is amniotic fluid. Pregnant women in the late stages of pregnancy, if at any time abdominal pain or abnormal vaginal discharge, etc., must go to the hospital as soon as possible to find out the cause.