采用正电子湮灭技术和金相显微以及扫描电镜能谱技术对南唐永通泉货铁钱和若干南北宋铁钱进行了研究。结果表明，早在南唐时期，我国铁币冶铸技术已达到一定水平，且在宋代有所改进。测试表明，正电子湮灭技术结合其它测试方法，对于古代铁币的结构研究以及判别它们的真伪提供了科学的测试手段 Positron annihilation and metallographic microscopy as well as scanning electron microscopy (EDS) were used to study the ironclad fortunes of the South Tang Yong Tong and some money from South and North Song Dynasty. The results show that as early as the Southern Tang Dynasty, China’s iron smelting technology has reached a certain level, and some improvements in the Song Dynasty. Tests show that positron annihilation technology combined with other testing methods provide a scientific test method for the study of the structure of the ancient iron coins and their authenticity