Eating watermelon during pregnancy does not usually cause amniotic fluid to become low, and low amniotic fluid may be related to fetal structural abnormalities, maternal diseases and other factors. Watermelon contains lycopene, vitamin A, potassium and many other ingredients. Moderate consumption of watermelon by pregnant women can replenish the trace elements needed by the body, and generally will not lead to low amniotic fluid. Pregnant women should pay attention to the right amount of watermelon, to avoid excessive consumption, diarrhea and other uncomfortable symptoms. When women experience low amniotic fluid during pregnancy, it may be due to a variety of factors such as fetal structural abnormalities, maternal diseases, placental hypoplasia, etc. It is recommended to go to the hospital for further examination in a timely manner and make judgments under the guidance of the doctor to avoid delays in the condition, which may lead to adverse consequences. Pregnant women should eat more food rich in protein during pregnancy, such as eggs, pork lean meat, soy products, milk and so on. It is also necessary to properly supplement shrimp, fish, pork liver, oats, 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.