刀币是春秋战国时期公元前770-前221的青铜铸币之一。刀币是对春秋战国时期铸行的针首刀、尖首刀、明刀和齐刀、圆首刀等各种刀形货币的总称。因其形状像刀而得名.东方的齐国和北方的燕国主要使用刀币。刀币分“燕明刀”和“齐刀化”二大类型。刀币形状取象于山戎、北狄等北方游牧民族渔猎用的刀类工具。由于齐刀面有“化”字文而称“刀化”。刀货形状刀背分弧背、折背、直背，刀首有平首，尖首之分，也是我国早期一种青铜铸币。
春秋战国时期,社会变革最为激烈,乃先秦货币中最为多姿多彩的时期。列国征战,疆域变迁,民族融合,商品交换,引起大量货币流通,出现了布币、刀币和圜钱等多种货币体系。略晚于铲币的刀币,正是这个时期货币中的一枝耀眼的奇葩。刀币”正式称谓是化(货)刀币”是我国早期的一种青铜铸币。其形状就像一把小刀,由刀首、刀身、刀柄和刀环四个部分组成。刀之缘以外郭,刃不向外向左面不向右,所说回背凸刃,刀首近于三象形,刀身和刀柄是大小相近的两个长方形,刀环呈圆形。整个刀币由几种几何形体巧妙地组合在一起,形成了一种平稳周正、丰满、圆润的形象美和和谐美。
此刀币形质轻薄，平底弧足。銎较短，空首不延伸到币中央，銎的下端缩到銎与币身的相接处。四周有郭，面、背无文，中线隆起。这类早期空首大布是由原始布直接演化而来，传世甚罕，具有很高的收藏价值。
Dao coin is one of the bronze coins minted during the Spring and Autumn and Warring States periods from 770 BC to 221 BC. Dao coin is a general term for various knife shaped coins minted during the Spring and Autumn and Warring States periods, including needle head knives, pointed head knives, Ming knives, Qi knives, round head knives, and so on. It is named after its shape resembling a knife. The Qi state in the east and the Yan state in the north mainly use knife coins. Knife coins are divided into two types: "Yanming Knife" and "Qidao Hua". The shape of the knife coin is similar to the knife tools used by northern nomadic ethnic groups such as Shanrong and Beidi for fishing and hunting. Due to the presence of the character "hua" on the Qi Dao surface, it is called "dao hua". The shape of the knife is divided into curved back, folded back, and straight back, with a flat head and a pointed head. It is also an early type of bronze coin in China.
During the Spring and Autumn period and the Warring States period, social change was the most intense, making it the most colorful period in the currency of the pre Qin period. The wars of various countries, changes in territory, ethnic integration, and commodity exchange have led to the circulation of a large amount of currency, resulting in various currency systems such as cloth coins, knife coins, and round coins. The knife coin, slightly later than the shovel coin, was a dazzling oddity in the currency of this period. The official title of Dao coin is Hua (Huo) Dao coin, which is an early type of bronze coin in China. Its shape is like a small knife, consisting of four parts: the blade, body, handle, and ring. The edge of the knife is beyond the border, with the blade not facing outward or to the left or to the right. It is said to be a convex blade with a back, and the blade head is close to a three quadrant shape. The blade body and handle are two rectangular shapes of similar size, and the blade ring is circular. The entire knife coin is cleverly combined with several geometric shapes, forming a smooth, round, and harmonious image beauty.
This knife coin has a light and thin shape, with a flat bottom and curved feet. The hole is relatively short, and the empty head does not extend to the center of the coin. The lower end of the hole shrinks to the junction between the hole and the coin body. Surrounded by Guo, with no text on the face or back, and a raised midline. This type of early hollow head cloth evolved directly from primitive cloth and is rarely passed down, with high collection value.
