This dissertation focuses on the proper understanding of digital currencies, its impact on a country’s economy, and how to design and regulate digital currencies. First, we review the current literature on digital currency and discuss the shortcomings of existing research. Second, we focus on the development of monetary forms, digital monetary forms, and the attribution of minting power. Third, we discuss the issue of the attribution of monetary issuance power, taking into account three major factors, that is the laws of historical evolution, the political and ideological demands of the state, and the ability to perform monetary functions (the core of which is the stability of currency values). Furthermore, we conduct an empirical analysis on the impact of Central bank digital currency (CBDC) on the money policy in China. We find that the use of digital money leads to higher inflation, but the effect is not significant. Finally, we discuss the design frameworks and regulatory ideas of digital currency. On this basis, we propose a reference framework for Central bank digital currency (CBDC) design in China, identify the risks of private digital currencies, and put forward corresponding regulatory recommendations. / Business Administration/Finance