Low amniotic fluid in 19 weeks of pregnancy, if the amniotic fluid is combined with fetal abnormalities, it is necessary to induce labor in time, if the fetus is normal, to actively search for the cause, targeted treatment. Ultrasound in 19 weeks of pregnancy found that the amniotic fluid is low, further examination is needed. If the fetus has malformations, it is recommended that the pregnant woman terminate the pregnancy as soon as possible. Labor can be induced by injection of isacridine through the amniotic cavity under the guidance of ultrasound. If the amniotic fluid is low, but the development of the fetus is normal. It is necessary to actively search for the cause of the disease and remove it in time, which can be improved by appropriate rehydration of the pregnant woman, anti-infection, and improving the function of the placenta. In addition, the intrauterine condition of the fetus should be monitored dynamically. Pregnant women should pay attention to regular obstetric examination during pregnancy, if there is any abnormal situation, you need to consult a doctor for examination and active treatment, so as not to affect the development of the fetus.