Square pile structure

The invention discloses a square pile structure. The square pile structure comprises square piles, end heads arranged at the ends of the square piles, and an end connecting plate for connecting the ends of the two square piles in butt joint. Grooves are formed in the side faces of the two end heads of the square piles, two protrusions are arranged on the inner side of the end connecting plate, andthe two protrusions of the end connecting plate are matched with grooves in the end heads of the two square piles in butt joint. Corresponding butt joint locating holes are formed in the end faces ofthe end heads of the two square piles in butt joint, and locating pins are arranged in the butt joint locating holes. The square piles are reasonable in structural design, the adjacent square pile ends are buckled and connected through the end connecting plate, the connected square pile end heads are limited through a set of locating pins, connecting is firm and reliable, and operation is easy and convenient; and the groo