With the rapid development of information network and intelligent control technology, smart grid emerges as the times require, and its development cannot be achieved without a stable communication support platform. The emerging 5G communication network contributes well to intelligent grid by greatly improving reliability and efficiency due to its super large connectivity, ultralow delay, ultra-high bandwidth and other characteristics. In view that the existing communication support methods cannot meet the needs of front-line electricity workers in the actual work, this paper establishes a 5G smart grid communication support platform after conducting a comprehensive research and design from the aspects of network architecture, overall framework and functional structure. The 5G smart grid support platform not only can integrate the original scattered and inefficient communication systems but also can realize the centralized management of each function module of the communication system. What’s more, it proves an effective solution for company’s communication and offers a convenient, fast and efficient communication platform for front-line operators