As shown in Table 1, the high frequency signal transmission cable 1 of the example was small in attenuation at any frequency, as compared to the high frequency signal transmission cable of the comparative example, so it was able to be confirmed that good attenuation properties were achieved. This is considered to be because the crack suppressing layer 7 provided between the insulator 3 and the plating layer 4 was bent while being moved in the longitudinal direction of the cable 1 relative to the bending of the insulator 3, thereby being able to suppress the occurrence of a cracking in the plating layer 4, and keep the distance between the inner conductor 2 and the plating layer 4 substantially constant, therefore resulting in being able to homogenize the characteristic impedance. Furthermore, it is considered that the electrical conductivity resulting from using the compressed stranded wire conductor as the inner conductor 2 contributed to the good attenuation properties. In particular, in the high band of not lower than 1.25 GHz and not higher than 6 GHz, the high frequency signal transmission cable 1 of the example was very small in attenuation as compared to the comparative example, so it was able to be confirmed that the high frequency signal transmission cable 1 of the example was excellent in the high frequency signal transmission properties (attenuation properties) with the high frequency signal transmission cable 1 being bent.