A new kind of short turbine blade-dolphin blade is introduced for emploxing instead of the traditional TC-1A short blade.In the traditional short turbine cascade,the profileloss is usually small and the secondary flow loss at both ends is rather high.The dolphin -cascade is adopted to replace the traditional TC-1A cascade for reducing high secondary loss in the short cascade.The computation indicates that the aerodynamic characteristics are effec tively improved by use of dolphin cascade.