There is no such thing as the fastest way to replenish amniotic fluid in late pregnancy, which can be improved through hydration, medication and surgery. 1. Hydration: If the mother drinks too little water, the purpose of replenishing amniotic fluid can be achieved by drinking plenty of warm water. Besides, it can also be improved by intravenous infusion. 2. Medication: If the mother has hypercoagulability, she can take low molecular heparin injection as prescribed by the doctor. 3. Surgical treatment: If it is caused by the change of amniotic membrane permeability, it can be treated by amniotic fluid infusion therapy. There are many other causes of low amniotic fluid in late pregnancy, so it is recommended to go to the hospital for consultation and treatment in time. In daily life, pay attention to safety and avoid trauma. Pay attention to eating healthy and replenish the nutrients needed by the body.