First a report about present status of circulating fluidized bed reactors for coal and multi-fuel combustion in power plants is given. Thereafter the development potentials and research needs for further improvement of CFB com-bustors operating with finely grained bed materials are discussed and recommendations for direction of further research and development work are presented. First a report about present status of circulating fluidized bed reactors for coal and multi-fuel combustion bed in power plants is given. direction of further research and development work are presented.