Non-invasive DNA test for men and women, technology reveals the mystery of the new world for you. DNA is the basic substance that constitutes life. Non-invasive DNA sequencing can easily and accurately predict a person\’s gender. By analyzing the cell-free DNA of the fetus in the early stages of pregnancy, it can not only accurately determine the gender of the fetus, but also provide support for the diagnosis, prediction, and early prevention and control of diseases. In this article, we will review the technology of non-invasive DNA sequencing from four aspects.