The scientific and technological revolution 4.0 is changing the landscape of the economy and society. Blockchain and cryptocurrencies are among these powerful innovations. Recently, a wave of cryptocurrency investment has spread to countries around the world. The impact of cryptocurrencies is investigated in this thesis. "Cryptocurrency" has started to become a buzzword. The growth of the market has made investors eager to participate. However, in order to minimize the risks when participating in this market, background knowledge about the market and cryptocurrencies is necessary. This thesis serves to help readers have the most basic judgments about the cryptocurrency market. The thesis uses the appropriate method of analysis and synthesis. The definitions are given to help readers understand some basic knowledge about the financial market and cryptocurrency. Historical knowledge is also analyzed to provide a general overview of the development process of the market. The result that the author wants to bring is to help readers understand some basic content about the financial market and cryptocurrencies.