Next, the technical ideas grasped from the above-described embodiments will be described with the aid of the reference characters and the like in the embodiments. It should be noted, however, that each of the reference characters and the like in the following descriptions is not to be construed as limiting the constituent elements in the claims to the members and the like specifically shown in the embodiments.

[1] A high frequency signal transmission cable (1), comprising: a conductor (2); an insulator (3) provided over a periphery of the conductor (2); a plating layer (4) provided over a periphery of the insulator (3); and a sheath (6) provided over a periphery of the plating layer (4),

• • wherein a crack suppressing layer (7) is provided between the insulator (3) and the plating layer (4), in such a manner as to remain in contact with the insulator (3) while being provided with the plating layer (4) over an outer surface of the crack suppressing layer (7),
  • wherein the crack suppressing layer (7) suppresses the occurrence of a cracking in the plating layer (4) by bending while moving in a longitudinal direction of the cable (1) relative to a bending of the insulator (3).

[2] The high frequency signal transmission cable (1) according to [1], wherein a thickness of the crack suppressing layer (7) is thinner than a thickness of the insulator (3).