The invention belongs to the field of fluid machinery, and in particular, discloses a centrifugal fan steering volute. The centrifugal fan steering volute comprises a collecting section and a steeringsection; the collecting section is enveloped by an annular wall surface, a front spiral surface and a back spiral surface; the lower edge of the annular wall surface is formed by molded line design,and the upper edge is formed by molded line design; the front spiral surface and the back spiral surface are both perpendicular to the annular wall surface, and are connected with the lower edge and the upper edge of the annular wall surface; the steering section is an elbow type runner enveloped by a large arc surface, a small arc surface, an annular wall side plane and a volute tongue side plane; the large arc surface, the small arc surface and the annular wall side plane are tangential to the tail ends of the front spiral surface, the back spiral surface and the annular wall surface; and the volute tongue side plane is connected with the large arc surface and the small arc surface, and is parallel to the annular wall side plane. The volute is fused with a traditional volute and a steering channel, and realizes the air flow direction deflection in the volute to a specific direction by the compact structure, the smaller size and the flow loss.