Foundation pit prefabricated reinforced concrete slab dado member

The utility model relates to a prefabricated reinforced concrete slab dado member for a foundation pit, and belongs to the technical field of building construction. The wall protecting plate comprises a plurality of upper wall protecting plates, a plurality of lower wall protecting plates and four corner wall protecting plates, the upper wall protecting plates and the lower wall protecting plates are laid on the upper portion and the lower portion of the four wall protecting plates of the foundation pit respectively, the four corner wall protecting plates are laid on the four corners of the foundation pit, the wall protecting plates are spliced in an inserted mode, and the wall protecting plates are connected in an inserted mode. Anchor bars are anchored into all the wall protecting plates for fixing. The foundation pit wall reinforcing structure is specially designed for foundation pit construction with high water level and sand layer soil texture, can completely cover and reinforce the pit wall of the found