PURPOSE: To reduce a pressure loss by specifying a camber line shape in a blade section in the vicinity of each end part in hub and tip sides in a back side of a stationary blade and a span directional position of a maximum blade thickness part, to suppress separation of blade surface and wall surface boundary layers.

CONSTITUTION: In a blade section in the vicinity of hub and tip side end parts of a stationary blade 10, a shape of a camber line 12 is formed so as to be a large warp in the latter half part of chord length, and further a maximum blade thickness Tmax is positioned in a rear end side T from the maximum blade thickness Tmax in the vicinity of the span directional center part. Consequently, a static pressure in the vicinity of a leading edge 6 of a back side B is generated lower in the vicinity of the span directional center part as compared with in the vicinity of the hub and tip side end parts, and a blade surface boundary layer is moved in the vicinity of the span directional center part from in the vicinity of the hub and tip side end parts of the back side B. Accordingly, the boundary layer in the vicinity of the hub and tip side end parts of the stationary blade 10 is suppressed from separation, to reduce a pressure loss in the vicinity of the hub and tip side end parts of the back side B of the stationary blade 10.