The present invention provides a cable for high-frequency
signal transmission and a manufacturing method thereof. When transmitting high-frequency signals, it is difficult for the cable to attenuate, and even when bending and wiring high-frequency signals in a narrow space, the transmission characteristics are hardly reduced. The cable (1) for high-frequency
signal transmission at least includes a conductor (2), an insulator (3) covering the periphery of the conductor (2), a
coating layer (4) covering the periphery of the insulator (3), and a sheath (6) covering the periphery of the
coating layer (4). Among them, an anti-
cracking layer (7) is provided between the insulator (3) and the
coating layer (4). The anti-
cracking layer (7) is arranged in contact with the insulator (3) and has a coating layer (4) on its outer surface. The anti-
cracking layer (7) is composed of a resin film (71). In response to the bending of the insulator (3), it bends while relatively moving in the cable length direction, thereby suppressing cracking of the coating layer (4).