Foundation pit supporting device

The utility model relates to a foundation pit supporting device which comprises a pile wall structure arranged along the edge of a foundation pit to be constructed and used for reinforcing the foundation pit. The stabilizing beam is connected with the tops of the two opposite sides of the pile wall structure, and the two ends of the stabilizing beam extend out of the pile wall structure; and the anchoring units are distributed on the portions, extending out of the pile wall structure, of the stabilizing beams, each anchoring unit comprises two anchoring pieces symmetrically distributed relative to the stabilizing beams, and the two ends of each anchoring piece are connected with the pile wall structure and the stabilizing beams correspondingly. According to the foundation pit supporting device, the occupied underground space around the foundation pit to be constructed can be reduced, limitation of stratum conditions can be avoided, convenience of foundation pit construction is improved, meanwhile, structural