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目的：探索α－地中海贫血早期产前诊断的方法；方法：利用聚合酶链反应技术对8例高危妊娠者采用绒毛取样进行缺失型α－地中海贫血的早期产前诊断；结果：检测出胎儿水肿综合症2例，杂合子4例．正常胚胎2例，其中3例孕中期行羊水检查，证实了绒毛诊断的准确性；结论：绒毛取样是诊断缺失型α－地中海的一种安全可靠的孕早期产前诊断方法。
OBJECTIVE: To explore the method of early prenatal diagnosis of α-thalassemia. Methods: Early prenatal diagnosis of deletional α-thalassemia was carried out in 8 high-risk pregnancies by polymerase chain reaction (PCR). Results: Fetal edema Syndrome in 2 cases, 4 cases of heterozygotes. Normal embryos in 2 cases, of which 3 cases during the second trimester of amniotic fluid examination, confirmed the accuracy of diagnosis of villi; Conclusion: Villus sampling is the diagnosis of missing α-mediterranean a safe and reliable prenatal diagnosis method.