Abstract: As a key component of modern power systems, intelligent substations achieve information exchange and remote monitoring and control between devices through network communication technology. This article analyzes the application of network communication technology in intelligent substations, including wired communication, wireless communication, fieldbus, IEC 61850, and other aspects. It explores its role in improving the reliability, operational efficiency, and security of power systems, outlines the advantages and challenges of intelligent substation network communication technology, and looks forward to the future development of intelligent substation network communication technology.