The direct cause of low amniotic fluid is the imbalance between the production and absorption of amniotic fluid. Pregnant women can replenish amniotic fluid through massive hydration, intravenous infusion, amniotic cavity perfusion, etc. There is no most effective method, and it should be determined according to the individual’s situation. 1. Drinking a lot of water: It is recommended that pregnant women drink more than 2000ml of water within 2 hours, thus promoting blood circulation and increasing the amount of amniotic fluid. 2. Intravenous fluids: Pregnant women can increase the amount of amniotic fluid through intravenous fluids. Replenishing a large amount of fluids within a short period of time can increase the blood circulation of the mother’s body, thus indirectly increasing the circulation of the uterus and placenta, which may achieve the purpose of increasing the amount of amniotic fluid. 3. Amniotic fluid infusion: If the above methods still cannot replenish the amniotic fluid, it is necessary to consider the direct infusion of fluids into the amniotic cavity to directly increase the amount of amniotic fluid. Therefore, if a pregnant woman has a decrease in amniotic fluid, it is recommended that she consult a doctor in a timely manner, and under the guidance of the doctor, complete the relevant examinations to determine the cause of the disease and treat the symptoms.