The present invention is to provide a media burst control system in a multimedia service using one or more media servers in which the floor is synchronized between the media. A floor management server 30 for managing the floor allocation policy for multimedia is provided independent of a group of media servers 20 for providing media services. The floor allocation policy for multimedia to be allocated to the group of media servers is stored in a floor allocation policy portion 33 and control is made so as to synchronize the floor of the respective media by a floor allocation judgment portion 32. The floor allocation policy portion 33 is designed to integrate for setting the policies set for respective media servers of the group of media servers 20 or to enter the policy for multimedia from any terminal of the group of terminals 10 or a server such as a presence server 40 or the like.