Amniocentesis, also known as amniocentesis, is used to detect fetal growth and development as well as the presence of chromosomal abnormalities. It is not a mandatory procedure as it carries certain risks. Amniocentesis is mainly suitable for pregnant women over 35 years old, pregnant women with high risk of Down’s syndrome, pregnant women who have previously given birth to a chromosomally abnormal fetus, couples with one chromosome abnormality or a balanced translocation, women who are carriers of sex-linked genetic diseases and it is necessary to find out the sex of the fetus in the mid-pregnancy stage, pregnant women who have had a special birth history, or those who have a serologic abnormality. The best time to perform amniocentesis for prenatal diagnosis is between 16 and 24 weeks of pregnancy. Amniocentesis also carries risks of puncture failure, intrauterine infection, cardiovascular accidents, and miscarriage. It is recommended that pregnant women of advanced age or those with a high Down’s syndrome risk value consult a medical professional for prenatal diagnosis before delivery to ensure eugenic fertility.