Abstract:Product Service System (PSS) is a new idea of and a new way to Sustainable Development realization. On basis of study on the concept and thought essence of PSS, as a subsystem of PSS of electromechanical products, the remote maintenance and fault diagnosis of system was discussed thoroughly. The systematic structure of fault diagnosis system and remote maintenance were given, and the behaviorbased multiagent remote maintenance and fault diagnosis system was proposed, which provided a new way for the remote maintenance and fault diagnosis of electromechanical equipment. Finally further development direction of the remote maintenance diagnostic system is pointed out.