Foundation reinforcing device

The utility model discloses a foundation reinforcing device, which relates to the technical field of building construction, and comprises a foundation pile, the top of the foundation pile is provided with a fixed clamping groove, the bottom of the foundation pile is fixedly connected with a fixed clamping block, the fixed clamping block is matched with the fixed clamping groove, and the inside of the foundation pile is connected with a sliding plate in a sliding manner. A sliding rod is fixedly connected to the surface of the sliding plate, a rotating shaft is rotatably connected to the bottom of the sliding plate, a rolling shaft is rotatably connected to the surface of the rotating shaft in a sleeving mode, a groove is formed in the top of the fixing clamping block, and a fixing device is arranged in the groove. The two foundation piles are fixedly installed together through the connection effect between the fixing clamping blocks and the fixing clamping grooves, a worker does not need to weld and fix the f