The utility model provides a high-frequency signal line which can inhibit the damage to an interlayer conductor, and also provides electronic equipment comprising the high-frequency signal line. A signal line (20) extends along line parts (21a-21e). A reference grounding conductor (22) is disposed at a positive direction side, closer to the z-axis than the signal line (20), in a dielectric medium green body (12), and therefore is opposite to the signal line (20). An auxiliary grounding conductor (24) is disposed at a negative direction side, closer to the z-axis than the signal line (20), in the dielectric medium green body (12), and therefore is opposite to the signal line (20). Via hole conductors (B1-B4) are connected with the reference grounding conductor (22) and the auxiliary grounding conductor (24). In a line part (12b), the via hole conductors (B1-B4) are not disposed to be closer to the negative direction side of the x-axis than the signal line (20) when being overlooked from the z-axis.