Intelligent power utilization is a topical and difficult subject in the study of smart grid. The flexible and interactive mode of power supply and consumption has become the trend of intelligent power utilization. A description includes the standards， system and terminal technology of advanced metering infrastructure， the bi-directional interactive operation mode and supporting technology of intelligent power utilization， and the interaction between users power utilization environment and patterns， which constituting the flexible and interactive utilization of intelligent power. The current situation and development problems of these techniques at home and abroad are discussed. The development goals of flexible and interactive utilization of intelligent power are clarified. The development trends and technical study route of flexible and interactive utilization of intelligent power are elaborated.