Based on the analysis on development tendency of smart grid in future,the development prospect and ultimate objective of demand response technology based on the platform of smart grid are predicted and revealed.Research results show that the open and interactive smart grid in future is favorable to the development of demand response technology. The game model of demand response among plants,power grid and power consumers based on the platform of smart grid is researched by equilibrium analysis in the game theory,and the game equilibrium of demand response under complete information is discussed while the restrictions to both power suppliers and power consumers are deregulated,and the market rules for the game of demand response are given.