Building construction post-cast strip non-back-shore supporting formwork reinforcing device

The utility model discloses a building construction post-cast strip non-shoring formwork reinforcing device, which belongs to the technical field of building construction, and comprises a plurality of side reinforcing plates, the plurality of side reinforcing plates are uniformly divided into two groups, and the plurality of side reinforcing plates in each group are longitudinally stacked and arranged; a bottom supporting plate is fixed to the side face of the lowermost side reinforcing plate. The bottom supporting plate is arranged to be matched with the side reinforcing plate for use, the side reinforcing plate is attached to the post-cast strip inner formwork on the same side as the side reinforcing plate, the bottom supporting plate is matched with the ground binding nails to achieve stability of the side reinforcing plate, and then the formwork can be effectively supported; the side reinforcing plates on the two sides can be effectively reinforced and supported, the length of the horizontal supporting pi