The utility model relates to a device for automatically adjusting foundation pieces in an operation area. The device comprises a bottom plate, the four foundation pieces, a rotating disc and a drive device. The bottom plate is arranged in an embedded hole in the ground of a warehouse. The rotating disc is arranged below the bottom plate in a rotating mode. The drive device is arranged in the embedded hole in the ground of the warehouse and connected with the rotating disc and drives the rotating disc to rotate. Four arc-shaped grooves are evenly distributed and formed in the rotating disc. A push rod is arranged in each arc-shaped groove. The rear end of each push rod is connected with the corresponding foundation piece. All the four foundation pieces are located on the bottom plate. Four guide holes used for the foundation pieces to move are formed in the bottom plate. The device for automatically adjusting the foundation pieces in the operation area is ingenious in design, reasonable in structure, convenient to use and high in practicability; goods can be accurately placed in an assigned area through the device, and therefore the problem of placement accuracy of the goods in the operation area is solved, efficiency of automatic storage facilities is effectively improved, and standardized work is achieved.