The invention discloses a guide vane wheel assembly and a draught fan with the guide vane wheel assembly. The guide vane wheel assembly comprises a base body provided with an annular curve face and vanes which are arranged on the base body, extend in the radial direction of the base body, are arranged on the annular curve face, and incline in the clockwise direction or anti-clockwise direction of the base body in the radial outward extending direction of the base body; the multiple vanes are arranged on the base body at intervals to form an annular shape, and the line formed by annular curve cutting by the section passing through the axis of the base body is in an arc shape with a gradually-decreased included angle between the tangent line and the axis of the base body in the direction away from the axis of the base body. According to the guide vane wheel assembly in the embodiment, the impact of the outlet gas flow can be reduced, deformation is not prone to happening, and work performance of the guide vane wheel is ensured.