Pile head locking-connecting structure

The invention discloses a pile head locking-connecting structure, which comprises an upper metal connecting end of an upper pile body and a lower metal connecting end of a lower pile body, wherein the upper metal connecting end is opposite to the lower metal connecting end; the peripheries of the upper and lower metal connecting ends are wrapped with more than two annular connecting covers; at least two transverse through holes are formed in the upper and lower metal connecting ends respectively; connecting holes are formed in the annular connecting covers, and are aligned with the transverse through holes; bolts enter the transverse through holes from the connecting holes in one side of the annular connecting covers, extend out of the corresponding connecting holes in the other side to be connected with nuts so as to form a bolt connecting fixing structure.