Introduction  In domestic thermal power plants， traditional line transmission technology is still used in the fuel management system， which lacks flexibility， reliability and mobility in terms of data integration processing or interconnection with the cloud platform. Data communication is an important development trend of intelligent power plant management， and the higher transmission rate is the goal of building a big data cloud computing platform for smart power plants in the future. This paper provides a reference for studying the application of higher-speed wireless data transmission in power industry， building and applying the latest wireless transmission technology in power plant data transmission network and integrating it with smart power plant big data platform.

  Method  Firstly， this paper introduced the current status and composition of fuel management platform in power plant， and described the 5G and WiFi6 technology， which was integrated into the existing network architecture of power plant management platform， so as to realize efficient application and optimization research.

  Result  By analyzing the problems existing in most of the fuel management platforms in power plants， the high-speed network can effectively improve the operation safety and stability of power plants and bring greater economic benefits.

  Conclusion  The construction of a wireless high-speed and complete data transmission system is more conducive to the effective and safe construction of intelligent fuel management platform， which should be designed and planned in the early stage of the project and applied to thermal power generation industries.