Eating a coconut a day has no definite amniotic fluid replenishing properties. Coconut contains a large amount of water, various inorganic salts, vitamins, but also proteins, amino acids, sugar and other nutrients. Theoretically intake of coconut water may increase maternal osmotic pressure, reduce the gradient pressure between maternal blood and amniotic fluid, but in fact in the clinic has not been found to eat coconut on the amount of amniotic fluid is less helpful, and there is no authoritative information to show that it can increase the amount of amniotic fluid. Although coconut does not increase the efficacy of amniotic fluid, but pregnant women eat coconut can be appropriate for the body to replenish nutrients, coconut in a variety of nutrients on the development of the fetus is also helpful, but pregnancy should be in moderation, because too much intake may cause increased blood sugar and will increase the burden of the digestive tract. In addition, normal amniotic fluid can be checked regularly, while decreased amniotic fluid is mainly seen in the clinic for placental hypoplasia, fetal structural abnormality, and hypertensive disorders in pregnancy, etc. Further examination should be conducted to clarify the cause of the disease, and according to the cause of the disease, follow the doctor’s advice to intervene reasonably.