Pregnant women with low placenta position usually cannot have amniocentesis to avoid accidents. Amniocentesis is a dangerous operation for both the pregnant woman and the fetus, so amniocentesis is not a mandatory or routine test. Pregnant women with a low placenta position will have a higher chance of danger if they undergo amniocentesis, which can easily injure the fetus as well as the placenta, and will have obvious adverse effects on the growth and development of the fetus. If amniocentesis is necessary to diagnose a disease, it is important to go to a regular medical institution and do a thorough physical examination of the pregnant woman before performing the amniocentesis procedure to avoid accidents as much as possible.