Novel light retaining wall

The utility model belongs to the technical field of sewage treatment, and particularly relates to a novel light retaining wall which comprises a retaining wall frame, an auxiliary assembly and a sealing rubber strip, the auxiliary assembly is arranged on the retaining wall frame, the auxiliary assembly comprises a rubber plate laid on the bottom face of double I-shaped steel and is fixed through sunk screws, and the wall face of the retaining wall frame is a PP plate riveted to the outer side of the frame. The water retaining wall and the concrete wall are sealed through sealing rubber strips, a retaining wall frame is formed through cooperation of double I-shaped steel, angle steel and channel steel, the overall strength of the retaining wall is improved under the condition that the weight is light, then a rubber plate is laid on the bottom face of the retaining wall frame and fixed through countersunk screws, and riveted PP plates are matched with the side faces, so that installation with water can be achie