Thalassemia genetic test is a DNA test by PCR through blood sampling, and the diagnostic standard is the biological test report of the laboratory; if the fetus is at risk of thalassemia major, the parents need to take the initiative to conduct prenatal diagnosis to minimize the risk; genetic diagnosis identifies whether the fetus genetic type is thalassemia major, and if so, the pregnancy needs to be terminated. From the eugenic point of view, a child with β-thalassemia major will have an impact on society and impose a heavy economic burden on the family, such as the cost of transfusion and iron removal treatment is about 10,000 RMB for 1 month and 100,000 RMB for 1 year.