Amniotic fluid can usually be replenished in two to three days, but it depends on each individual’s constitution. Depending on the body type of the pregnant woman, the duration of hydration may vary. Amniotic fluid protects the fetus and maintains a constant temperature in the uterus, so if there is too much or too little amniotic fluid, it may have an effect on the fetus. If the amniotic fluid is too low, the fetus may be deprived of oxygen in the uterus, which may result in fetal abnormalities. You need to pay attention to the fetal movement, if you find abnormal fetal movement you should go to the hospital in time, and test the amount of amniotic fluid by ultrasound under the doctor’s guidance. In the case of low amniotic fluid, pregnant women should pay attention to drink more water, soup or soy milk. During pregnancy, it is necessary to eat more food rich in protein, such as eggs, pork lean meat, soy products, milk and so on. It is also necessary to properly supplement shrimp, fish, pork liver, oatmeal, walnuts, peanuts and other foods, eat more fresh vegetables and fruits, to ensure that the intake of food nutritionally balanced, to avoid a single nutrition. During pregnancy, pay attention to more rest, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.