Cable construction method

The invention relates to the technical field of cable laying, in particular to a cable construction method which comprises the following construction steps: S1, excavating a foundation pit; s2, prefabricated cable trenches are installed in the foundation pit section by section to form a cable trench, each cable trench comprises a trench body of a U-shaped structure and guide rails fixed to the inner bottom wall of the trench body, and it is guaranteed that the adjacent guide rails are aligned in the installation process; s3, mounting brackets at the starting end of the cable trench, enabling the brackets to slide on the guide rail, fixing a cable on the brackets after each bracket is mounted, then pushing the brackets fixed with the cables to the tail end of the cable trench, and repeating the steps until the laying of the cable is completed; s4, covering the cable groove with the top plate to seal the cable groove; and S5, backfilling the foundation pit. The method has the effects of shortening the construct