To provide a vehicular grommet structure capable of corresponding to a required layout, preventing breakage of components due to interference while suppressing increase in manufacturing cost, and preventing increase in opening/closing operation force of a door body.

The vehicular grommet structure is provided with the door body 3 on a peripheral edge portion of an opening portion 2 formed on a vehicular body 11, and has a grommet member 14 covering the periphery of a harness member 4 wired between the peripheral edge portion and the door body 3 with a flexible bellows portion 15. Washer tube 6 is wired from the vehicular body 11 side toward the door body 3 along the grommet member 14. The grommet member 14 is provided with a skirt portion 20 locking the washer tube 6 and having a plurality of slits 21 accepting warp deformation of the grommet member 14.