Offshore platform berthing component

The utility model relates to an offshore platform berthing component which comprises a fixed berth arranged on the side portion of an operation platform, and a plurality of limiting grooves are formed in the other side, opposite to the operation platform, of the fixed berth. A component main body is connected in the limiting groove in a sliding manner; a supporting rod is arranged at the bottom of the component main body; a floating piece is arranged at the bottom end of the supporting rod; the bottom of the fixed berth is separated from the sea surface; the floating piece is located on the outer side of the bottom of the limiting groove. The bottom of the component body is connected with the floating piece; the buoy floats on the sea surface, and when waves are generated, the component main body fluctuates up and down; moreover, as the floating part is extremely close to the berthing position of the ship body, the wave frequencies borne by the floating part and the ship body are the same, the up-down fluctua