Digital economy refers to an economic form that uses data to guide resources to play a role and promote economic development. It covers many emerging technologies, such as big data, cloud computing, Internet of Things, blockchain, artificial intelligence and 5G communication. At the application level, the digital economy is now in the concept of new retail and new manufacturing. Through the identification, selection, filtering, storage and use of big data, the digital economy realizes the rapid optimal allocation and regeneration of resources and promotes high-quality economic development. What needs to be clear is that the digital economy is different from the virtual economy, and it is more similar to the process of combining traditional industries with digital technology to realize industrial intelligence. The development of digital economy aims at improving the intelligent level of industry and realizing more efficient and intelligent economic operation.