The invention discloses a double-core cable for a pipeline which comprises a center strengthening member which is located at the center portion and is formed by glass fiber filament bundling, a first conductor, a first isolating body, a second conductor and a second isolating body which is closely attached to the center strengthening member, and the center strengthening member, the first conductor, the first isolating body, the second conductor and the second isolating body are connected sequentially. In an arbitrary cross-section, the upper surfaces of the first conductor, the second conductor, the first isolating body and the second isolating body and the lower surfaces of the first conductor, the second conductor, the first isolating body and the second isolating body bend toward the center of the center strengthening member and the curvatures of the upper surfaces are equal to the curvatures of the lower surfaces; in an arbitrary cross-section, the upper surfaces of the first conductor, the first isolating body, the second conductor and the second isolating body are located at the same circumference, the peripheries of the first conductor, the second conductor, the first isolating body and the second isolating body are sequentially wrapped by a shielding layer and a protection sheath, and the shielding layer comprises an aluminum sheath and a first copper wire braiding mesh and a second copper wire braiding mesh, wherein the first copper wire braiding mesh and the second copper wire braiding mesh are closely attached to the aluminum sheath from the two sides of the aluminum sheath. The double-core cable for the pipeline is simple in structure, good in flexibility and strong in anti-interference ability.