Abstract: In the post-industrial society,the service economy has become an important power source for national and regional economic growth.From the point of view of economics and strategic management science,this paper,by using the method of literature analysis and normative analysis and on the basis of generalizing the service economic theory and analyzing the nature of the service economy,derives four strategic paths by which the service economy plays a role in regional competition:specialized division of labour,scientific and technological progress,service industry upgrading and urbanization.Then,drawing on Porter's"diamond model",it explores the competitive strategy to gain regional competitive advantage.