Seawall structure and construction method

The invention relates to the technical field of seawalls, and discloses a seawall structure and a construction method. The seawall structure comprises a seawall body, wherein the seawall body comprises a plane and an inclined plane, a first fixing groove is formed in the plane, a baffle is arranged in the first fixing groove, and a lifting structure for driving the baffle to ascend and descend is arranged on the seawall body; a first operation groove penetrating downwards is formed in the end, facing the inclined plane, of the baffle, a round hole is formed in the side wall of the first operation groove, the lifting structure comprises a first operation rod rotationally connected to the round hole and a rack arranged in the first fixing groove, and a right prism block is arranged at the end of the first operation rod; a gear is arranged on the right prism block, the rack is meshed with the gear, and a driving structure for driving the first operation rod to rotate is arranged on the baffle. The seawall struct