In this paper,the research progress of the Operational Earthquake Forecasting(OEF) is introduced from the major areas of probability gain,hybrid model development,and application in earthquake disaster reduction. Because the OEF is developed on the basis of the global Collaboratory for the Study of Earthquake Predictability(CSEP) project,it has very important technical foundation for earthquake forecast modeling and the practical foundation for solving the actual problems in earthquake preparedness and disaster mitigation. The related research and its technical connotation have important inspirational and referential significance for earthquake forecasting/prediction.