The invention relates to the technical field of
submarine cable laying, and discloses a
submarine cable traction guide device and a
submarine cable back-dragging construction method, and the
submarine cable traction guide device comprises a pipeline, a traction mechanism and a plurality of groups of guide mechanisms. The pipeline is arranged in the directional hole, and two ends are respectively an inlet end and an outlet end. And the traction mechanism is arranged at the bottom of the pipeline, is suitable for arranging a
submarine cable and is used for dragging the
submarine cable from the inlet end to the outlet end. The guiding mechanisms are arranged at intervals in the axial direction of the pipeline, each guiding mechanism comprises a plurality of guiding pieces arranged at intervals in the circumferential direction of the pipeline, each guiding piece comprises a fixed part and a rotating part which are connected, the fixed parts are connected with the inner wall of the pipeline, the rotating parts make contact with the outer wall of the submarine cable, and the submarine cable drives the rotating parts to rotate when moving. When the submarine cable is dragged back, rolling friction exists between the submarine cable and the guiding piece, the submarine cable cannot make contact with the inner wall of the pipeline,
friction force is smaller, the probability of damage to the submarine cable is small, meanwhile, power needed for dragging the submarine cable is reduced, and the energy-saving effect can be achieved.