The business structure and management model of the world’s major media groups have been evolving，and with regulatory reform and changes in media technology，have gradually developed across media，sectors，and fields，demonstrating their increasing scale in the process of resource agglomeration. Furthermore，the change in media technology has triggered unprecedented competition and game-playing in the media field，while lending fresh impetus to and providing new opportunities for development，transformation and upgrading. In terms of development features，the world’s major media groups are striving to seek greater development in business ecology and comprehensively upgrade their business structure；in the management model，they are endeavoring to reconstruct the communication relationship and perfect the value chain of media；in terms of market layout，they are committed to overseas market presence to optimize their global operational effectiveness. In the impact on the global media ecology，large Western media groups such as Warner Bros，Discovery，Paramount Global，and Comcast Corporation，with their abundant capital strength，have kept aggregating content，technology，talent，and market resources around the world to strengthen their monopolistic advantages. This further hinders the pluralism，multi-polarization，and diversification of the global media ecology. In the emerging media sector，regional or local media groups have fostered a healthy competitive landscape in the media ecology.