Pregnant women with less amniotic fluid may be due to a decrease in the production of amniotic fluid, loss of excessive causes, pregnant women to replenish amniotic fluid can be supplemented by drinking more boiled water every day, intravenous infusion of balanced salt solution and other methods to replenish amniotic fluid. 1. Reduced production of amniotic fluid: If a pregnant woman has gestational diabetes and other diseases, the blood vessels themselves have lesions, blood circulation is not very rich, to the placenta when the formation of placental blood vessels, blood reflux is poor resulting in the formation of amniotic fluid is reduced. Pregnant women can drink water to replenish the amount of amniotic fluid, in addition to drinking soup, soy milk and other juices. 2. Excessive loss of amniotic fluid: common causes such as premature rupture of membranes, resulting in amniotic fluid leakage, the total amount of reduction, pregnant women can drink water, but also under the guidance of the doctor through intravenous rehydration to replenish the amount of amniotic fluid, the daily infusion of balanced salt solution of about 2,000 ml, the main purpose is to replenish the circulating blood volume of pregnant women. If there are pregnant women with low amniotic fluid, it will affect the growth and development of the fetus, so once found it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to improve the relevant examination to clarify the cause and symptomatic treatment.