Multimedia information is rich and complex considering its heterogeneous nature: video, audio, text. A representation of this type of information based on its contents and its structure can allows for a high level of precision of description. The relevance of response will be still better if the representation takes into considerations the information needs of users, in particular the uses of these responses. In this study, firstly we present an outline of work relating to indexing and multimedia information representation. Secondly, we will demonstrate our approach of multimedia information representation based on the process of economic intelligence with our stimulated users' needs from multimedia information systems.