Waterproof sealing structure of pile head

The utility model relates to a pile head waterproof sealing structure, and belongs to the field of building waterproof engineering, the pile head waterproof sealing structure comprises a concrete cushion layer and a pile head, the top end of the pile head is higher than the top end surface of the concrete cushion layer, a steel bar is arranged in the pile head, and the steel bar extends out of the top end surface of the pile head; a cement-based permeable crystallization waterproof coating layer and a non-curing waterproof coating layer are sequentially arranged on the surface of the portion, higher than the concrete cushion layer, of the pile head from inside to outside and extend to the surface of the top end of the concrete cushion layer. A rubber water stop ring is sleeved on the part, extending out of the surface of the top end of the pile head, of the reinforcing steel bar, abuts against the surface of the top end of the cement-based permeable crystallization waterproof coating layer, and is buried in t