Ditching device for cable laying

The invention discloses a ditching device for cable laying, and relates to the technical field of cable laying. The furrowing drill rod specifically comprises a furrowing drill rod body and a positioning back plate, a plurality of soil breaking arms are fixedly connected to the bottom of the outer wall of the furrowing drill rod body at equal intervals, and a soil breaking drill bit is fixedly installed at the bottom end of the furrowing drill rod body; a limiting sliding frame is fixedly mounted on the front face of the positioning back plate, and a sliding motor base is slidably mounted in the limiting sliding frame. According to the ditching device for cable laying, through descending of the lifting top plate, the ditching depth of the ditching drill rod body is increased, the bottom end of the ditching drill rod body is promoted to deflect, under the action of the universal coupling, the ditching drill rod body keeps rotating, and the deflected ditching drill rod body can conduct ditching work more conven