Pingyao iron forging, with records dating back to the Daoguang period of the Qing Dynasty, after the war, China's cold weapons gradually withdrew from the stage of history, and the physical objects of the sword culture handed down by our ancestors for thousands of years were destroyed. The sword replication and restoration skills also emerged, and many craft masters emerged. They passed down the ancient sword replication and restoration skills through word of mouth from master to apprentice. The replication and restoration of ancient weapons is a comprehensive technology, consisting of forging, smelting, grinding, carving, casting, woodworking, leatherwork and other types of work. It comprehensively uses the scientific n-fire technology, exquisite metal smelting and forging technology, and exquisite exterior metal design and production process in ancient Chinese weapons, and fully reflects the level of good blade manufacturing technology with Chinese characteristics. Its core technology, the replication and restoration of swords (knives), adopts traditional patterned steel technology, uses traditional quenching technology, and integrates various decorative techniques such as carving, inlaying, gold, silver and copper inlay, lacquer art and other traditional Chinese craftsmanship, which has high requirements for the experience, quality and understanding of the craftsmen. The reproduction and restoration of ancient weapons is a powerful measure for the rescue excavation, research and protection of the precious cultural heritage of ancient Chinese weapons. It is a concentrated reflection of the research results of the Chinese people on the collection of ancient weapons. It is of great significance to the research and collection of ancient weapons.