With the support of communication network, combined with equipment technology, sensor technology and decision support technology, smart grid achieves the goal of safe, efficient and economic operation. It has higher power quality and stronger carrying capacity, and can support thermal power, hydropower, wind power and so on. By adjusting the relationship between power supply and consumption, power marketing can provide customers with safe and reliable power services, which guarantees the stable development of power enterprises. The intelligent power marketing system formed under the environment of smart grid can realize timely communication between power enterprises and users, meet the requirements of power customers for diversified services, economic efficiency and advanced technology, and complete data integration, storage and distribution. Generation, update and feedback to ensure the balance of supply and demand of electric energy and improve the operation efficiency.