The significance of female chromosome examination is to prevent hereditary diseases and to check whether there is normal fertility. 1. Prevention of hereditary diseases: the incidence of chromosomal genetic diseases is increasing year by year, and pre-pregnancy chromosome examination is very necessary. For example, trisomy 21 is a disease caused by chromosomal abnormality. If you do not check in advance, you may give birth to an abnormally developed or deformed fetus, and currently there is no cure for chromosomal genetic diseases. 2. Check whether there is normal fertility: chromosomal abnormalities, such as the lack of a female X chromosome, may also lead to infertility, through the pre-marital chromosome examination, you can understand whether there are abnormal chromosomes.