The invention discloses a tramegger special for a testing cable. The tramegger comprises a tramegger body. A protective cover is arranged on the surface of the upper end of the tramegger body, the four corners of the protective cover are fixedly installed on the tramegger body through first screws, a dial is arranged on the position, inside the protective cover, of the surface of the upper end ofthe tramegger body, a movable baffle is arranged on the position, on the upper portion of the dial, in the protective cover, a clamping head is fixedly installed on the front portion of the upper endof the movable baffle, the clamping head is a cuboid, and a telescopic cavity communicating horizontally is formed in the clamping head. According to the tramegger special for the testing cable, a convenient handle, an insulated junction box, the protective cover and a connecting ring are arranged, and thus the tramegger is easily held with one hand conveniently to conduct testing; the insulated box is internally wrapped with the wire connecting position, and thus the risk of electric shock is reduced; the dial is effectively protected from being impacted and damaged through the movable baffle; and the tramegger can be placed on a back of a body to move through a connecting shoulder strap conveniently, and the tramegger special for the testing cable is suitable for multi-point testing in an area with a large range.