To provide a cable setting structure which can obtain at low cost a structure for setting a plurality of cables in block into a through hole being the target of setting while securing watertightness.

A plurality of cables 1 are set in block in a watertight state into one housing to which periphery a thick O ring 2 is mounted, and the one housing 3 is press-fitted into one through hole 5 formed in a panel 4 being the target of attachment, and the cable setting structure enables the housing 3 to be fitted in the through hole 5 while securing watertightness easily.