Amniocentesis, also known as amniocentesis, is generally not recommended at 32 weeks of pregnancy. Amniocentesis is a test in which a puncture needle is inserted into the amniotic cavity through the peritoneal wall and amniotic fluid is extracted from the amniotic cavity to assess the condition of the fetus, and is usually performed at 16 to 26 weeks of pregnancy. At this time, the fetal organs are basically formed and the amount of amniotic fluid is relatively large. After 32 weeks of pregnancy, because of the rapid growth of the fetus and the gradual decrease of amniotic fluid in the uterine cavity, amniocentesis is prone to puncture the fetus or the placenta and other parts of the uterus, which may lead to a variety of complications, and therefore, it is not recommended to do amniocentesis. Amniocentesis needs to be performed at the right time and is an invasive test. Before performing amniocentesis, the doctor should assess the condition of the pregnant woman in detail.