The invention discloses a traction device for cable laying of a power supply company. The device comprises a main walking unit and two sets of auxiliary walking units hinged to the main walking unit.The two sets of auxiliary walking units are hinged to the corresponding side ends of the main walking unit through hinges respectively, the corresponding side ends of the two sets of auxiliary walkingunits are connected through bolts and nuts, and the main walking unit and the two sets of auxiliary walking units form a triangular mechanism used for crawling in a pipeline. Each of the main walkingunit and the two sets of auxiliary walking units comprises a base plate. The middle of the side face, away from the center of the triangular mechanism, of the base plate is hinged to one end of a shear fork telescopic mechanism. The device saves manpower, is convenient to use, is combined into a triangular structure, realizes crawling traction operation of cables of different specifications in pipelines of different sizes, can adapt to pipeline turning, can also be combined into a horizontal linear mechanism, can pull the cables on the ground, is wide in application range and adapts to different working conditions.