In the context of big data in the new era,power grid marketing management is facing unprecedented changes and challenges.As a new stage of information technology development,big data technology has the ability to process and analyze large datasets to reveal user behavior patterns,optimize service experience,and improve decision-making accuracy.Starting from the development of big data technology,this article explores its role in power grid marketing man-agement,and proposes optimization strategies for power grid marketing management from multiple perspectives such as data collection,customer service,and internal management.The aim is to provide reference for innovation and improve-ment of power grid marketing management,in order to adapt to the trend of technological development in the new era.