The development of the digital economy is of great significance and is a strategic choice to seize the new opportunities of the new round of technological revolution and industrial transformation. The digital economy is an economic activity that uses data resources as key production factors, modern information networks as important carriers, and information and communication technology as an important driving force for efficiency improvement and economic structure optimization. The communication network is a key infrastructure for the development of the digital economy. The invention of the telegraph in the mid-19th century changed the way the world communicated. Subsequently, the development of communication technology went through three stages: wired communication, wireless communication, and optical communication. Communication speed, capacity, and quality gradually improved, and coverage gradually expanded, promoting information dissemination and sharing, effectively improving production efficiency, and ultimately promoting economic development. In recent years, the construction of mobile communication and satellite internet has been comprehensively accelerated, and the combination of new generation information technology with artificial intelligence, blockchain, cloud computing, etc. has promoted society to quickly enter the digital economy era. New technologies bring new changes, giving rise to new models and formats, making economic activities more intelligent, efficient, and flexible, providing strong momentum and new opportunities for economic and social development. Communication networks are the carriers and channels of data and information, and the foundation for the development of digital technology platforms and the construction of application scenarios. The level of development, coverage, and service quality of communication networks directly affect the speed, scale, and efficiency of the digital economy. China has gradually formed a multi-level and diversified communication network industry ecosystem, with a strong international competitiveness in the industrial chain system, covering the basic layer, technology layer, application layer and other industrial chain links. The upstream and downstream of the industry and the internal and external constantly intersect, achieving cross-border integration. In terms of infrastructure, China has implemented the "5G+Industrial Internet" 512 project, promoting the construction of new generation information infrastructure such as 5G, Internet of Things, Industrial Internet, and Artificial Intelligence, providing important support for digital transformation. At the same time, actively participate in the construction of global communication networks, such as the Digital Silk Road and the bilateral cooperation mechanism of Beidou satellite navigation, to build bridges of mutual trust, cooperation, and win-win. In terms of technology, communication equipment companies such as Huawei, ZTE, and Datang Telecom hold important shares in the global market, providing advanced solutions for the promotion and application of new technologies such as 5G and the Internet of Things. In the fields of terminal devices, chips, sensors, etc., the pace of independent research and industrialization is constantly accelerating. Domestic smartphone brands have strong international competitiveness and influence, and the chip application market has a large scale and fast growth rate, continuously achieving technological breakthroughs. The global market share of sensors is relatively stable. In terms of application layer, sharing platforms have changed travel, consumption, and lifestyle. New business models such as live streaming e-commerce and WeChat mini programs empower commerce with technology, bringing consumers more shopping choices. Local life service platforms promote consumption and create employment opportunities. The ecological collaboration of the communication network industry chain not only promotes internal circular development, but also empowers digital transformation in various fields, building a diversified digital economic ecosystem. The communication network provides infrastructure, technical support, and application services for the digital economy. At the same time, the development of the digital economy promotes the transformation, upgrading, innovative development, and value growth of the communication network. The communication network is a key infrastructure in the digital economy era. To achieve numbers