Impeller wheel of steam turbine

The utility model discloses a steam turbine impeller which can effectively reduce the turbulent loss of liquid medium and improve the operation efficiency and comprises a static blade, a moving blade and a rotor. The static blade has a cambered blade surface, a blade surface tangent close to a liquid outlet end and the direction of an axis of the rotor form an included angle, and a blade surface tangent opposite to the other end is parallel to the direction of the axis of the rotor; and the moving blade is composed of a planar section, a blade surface which is close to one end of a liquid inlet and parallel to the direction of the axis of the rotor, a planar section with a blade surface which is at an opposite end and forms an included angle with the axis of the rotor, and a cambered section positioned between the two planar sections.