Abstract: IDC has become an important carrier for digital economy and supporting the strategic layout of the new generation of information technology. It plays an increasingly prominent role in cultivating new modes and new formats, promoting entrepreneurial innovation, and assisting the adjustment of the economic industrial structure. It is a national big data strategy. With the rapid application of 5G, Internet of Things, big data, artificial intelligence and other new-generation information technologies,the intensive and balanced development of IDC will provide strong support for the development of China's digital economy.

Key words: IDC, digital economy, critical infrastructure