Text appears marks the degree of social civilization has reached a very high level.But in Ancient Shu State in Guanghan,Sichuan,a new carrier of 16K-sized metal book made of metal copper of ancient text has been found in recent years in addition to the Earlier carrier of outer bark,bamboo,jade Jane,shells,bones and other objects,which is something unique in the world.The findings will not only rewrite the history of books in China,but also have a great reference value for the research on world history of books,while pushing the history of copper metallurgy forward to ancient times.%文字的出现，标志着社会文明程度已经达到一个极高的水平。近年来在四川广汉古蜀国，除了在树皮、竹简、玉简、龟壳、甲骨等物件上发现古文字外，还发现有用金属（紫铜）切成16K 大小的金属书，这是世界上绝无仅有的事情。这一发现，不但会改写中国的书籍史，而且对世界书籍史的研究都有重大参考价值，而铜冶金历史也将被向前推至上古时代。
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