Excessive amniotic fluid can have an impact on the fetus, and if necessary, the cause should be clarified and timely intervention should be made. Amniotic fluid is generally referred to as excessive amniotic fluid, which is a disease caused by an abnormal increase in the amount of amniotic fluid during pregnancy, and may be related to fetal malformations, gestational diabetes mellitus, and hypoproteinemia in pregnant women. Excessive amniotic fluid is clinically categorized as mild amniotic fluid, moderate amniotic fluid and severe amniotic fluid according to the degree of excess amniotic fluid. The more severe the degree is, the higher the risk of complications such as preterm delivery, premature rupture of membranes, placental abruption, etc., which can be severe enough to jeopardize the life of the fetus, therefore, excess amniotic fluid has an effect on the fetus. When excessive amniotic fluid occurs during pregnancy, patients with mild amniotic fluid without special clinical symptoms can be temporarily observed for changes in the condition; moderate and severe amniotic fluid need to be performed in severe cases of amniocentesis to reduce intrauterine pressure and reduce the risk of preterm labor, premature rupture of membranes, placental abruption; some patients with amniotic fluid combined with fetal malformations should be terminated in a timely manner. When pregnant women have amniotic fluid, they should actively seek medical treatment, and most of the patients have a good prognosis after active treatment, which can avoid the adverse pregnancy outcome of mother and child.