Following Country Wei and Country Chu, Country Qin successfully launched a reformation project directed and designed by Shang-Yang which transformed Qin from a minor country into one of the seven mightiest states in Warring States Period. Emperor Qinshihuang united China under whose rule China became an authoritarian state in political system, and there was a reformation in economic structure as well. However, there is scanty literature to provide a comprehensive understanding of Qin’s economic reformation. As Qin currencies were continuously excavated, more evidences could be provided on related studies. More particularly, the archeological discovery of a Qin tomb in Shuihudi, Yunmeng County of Hubei Province in November 1975 has provided a deeper understanding of the economic development in Qin dynasty. Currency issues such as types and forms of circulated money, official minting of money, money circulation in markets, and official monitoring of currency were recorded on 1155 bamboo slips discovered in the Qin tomb. Qin bamboo texts demonstrate that Qin currency transformed from actual money into a more mature phase of currency circulation, and it is a significant era of Chinese history when metal money started circulating. Despite the fact that Qin regime did not last long, the economic reformation was significant to the extent that Emperor Qinshihuang’s efforts in unified currency system set a framework for minting Yujian money, Sizhu money, and Sanzhu money in Han dynasty. It shows that currency system and its management in Ching dynasty was a significant landmark in Chinese history. Through examining the regulations recorded on Qin bamboo slips, we could clarify the weaknesses and faults in traditional historiography. The regulations also demonstrate the way in which Qin money was practically used in Qin society.