A cable assembly has a clamp provided at an end of a multi-core cable. The clamp, which is formed such that the inner diameter thereof increases as it is closer to the rear end, is fixed by caulking to the outer circumference of a sheath. An inner spring and an outer spring are arranged around the outer circumference of a sheath. The inner spring is fixed to the clamp in such a manner as the end thereof on the cable tip side is sandwiched between the sheath and the inner surface of the clamp. The outer spring is shorter than the inner spring in the cable axial direction, and the end thereof on the cable tip side is fixed to the outer circumference of the clamp. The outer circumference of the inner spring and the outer spring is covered with a rubber boot.