There are many reasons why pregnant women have low amniotic fluid. If the low amniotic fluid of pregnant women is due to insufficient blood volume of the mother’s body, they can drink about 2,000ml of water a day to replenish the amniotic fluid. When the blood volume in the pregnant woman’s body is obviously reduced, she can drink water to replenish the blood volume, and when the blood volume is elevated, it can effectively improve the phenomenon of scanty amniotic fluid. The amount of drinking water should be at least 2000ml per day, if the amount of drinking water is too little, it can’t meet the demand of the body. There are also some pregnant women with low amniotic fluid may be due to abnormal development of the fetal urinary system structure, or due to the weakening of the placenta, in this case, simple drinking water can not replenish the amniotic fluid, we should target the treatment of the original disease and remove the causative factors, if necessary, can be intravenous infusion to increase the amount of amniotic fluid. When pregnant women find that the amniotic fluid is scarce, they need to go to the hospital as soon as possible for examination, and then carry out standardized treatment after clarifying the relevant causes.