Sea discharge port structure suitable for sea discharge pipe

The utility model belongs to the technical field of sea drainage facilities, and discloses a sea drainage port structure suitable for a sea drainage pipe, which comprises a foundation pit, an anchor block and a grating plate, the anchor block is a cavity prefabricated body, the structural weight of the anchor block is reduced, and the requirement on the lifting capacity of an installation ship is reduced; the anchor block is provided with a U-shaped cavity and a rectangular cavity, the anchor block is arranged in the foundation pit and located at the bottom of the foundation pit, an opening of the U-shaped cavity faces upwards, and after the sea drainage pipe is arranged in the U-shaped cavity and abuts against the bottom of the U-shaped cavity, the U-shaped cavity and the rectangular cavity are filled with concrete, so that the sea drainage pipe and the anchor block are of an integrated structure, and the underwater weight of the anchor block is increased; the underwater stability is extremely high, vibratio