Third degree contamination of amniotic fluid is more serious. Third-degree amniotic fluid contamination refers to a high degree of contamination, which may be related to various factors such as fetal hypoxia, infection and hypertensive disorders during pregnancy. In this case, the amniotic fluid may appear dark green or brownish-yellow turbid, and may contaminate the fetal membranes, placenta, and umbilical cord, which can have a serious impact on the fetus. If the patient does not receive timely treatment, fetal distress in the uterine cavity for a longer period of time, fetal movement will be reduced, fetal heart abnormalities, and may even develop to fetal death. Patients with third-degree contamination of amniotic fluid should go to the hospital in time and choose the appropriate method to treat the disease to prevent the impact on the body.