Digital economy, as the most revolutionary transformation of economic forms in the twenty-first century, does not have a fixed definition. Instead, like a flowing river, it shows distinct characteristics of dynamic evolution with the continuous iteration of technologies. From a broad perspective, the digital economy is like a huge and complex ecosystem, an organic integration of a series of economic activities based on digital technologies. With an unprecedented powerful force, it has deeply embedded in and completely changed the operating mode and inherent structure of the traditional economy that has continued for many years, reshaping the economic territory like a surging economic tsunami.