Abstract: The development and advancement of numerical ensemble prediction technologies have improved tropical cyclone (TC) ensemble forecasts and their applications. TC ensemble forecast has played a more and more important role in TC routine operations. This paper summarizes the TC ensemble prediction systems of ECMWF, NCEP, JMA AND CMA, overviews the applications of TC ensemble prediction on TC’ track, intensity, precipitation and genesis forecasts etc., and looks into the future development and application of TC ensemble predictions.