ATM signal line convenient to identify and preparation method thereof

The invention discloses an ATM signal line convenient to identify, and belongs to the technical field of signal lines, the ATM signal line comprises a signal line body, and the signal line body comprises a wire core, a coating layer, a shielding layer and a sheath from inside to outside; the wrapping layer, the shielding layer and the outer skin sequentially wrap the wire core to form the signal wire body with the signal transmission and interference shielding functions, the outer skin is wrapped by the first color layer, the first color layer is wrapped by the second color layer, the color of the first color layer is set to be inconsistent with that of the second color layer, and therefore the signal transmission and interference shielding functions are achieved. A tearing ring defined by a plurality of through holes is arranged on the second color layer, the mark layer in the tearing ring can be removed by tearing the tearing ring, so that the color of the first color layer is exposed, the signal line body