DOOR STRUCTURE OF VEHICLE

To provide a door structure of a vehicle, which door structure makes it possible to suppress staining of a window glass with grease when of assembling the window glass into a window regulator.A door structure 1 comprises a door body 2; a window glass 3 having a substantially rectangular shape; and a window regulator 4, wherein grease G is applied onto a sliding face SL of a guide rail 42 of the window regulator 4, the door body 2 has a sash 22 being provided to the door body 2 before the window glass 3 is connected to the carrier plate at one side of the door body 2 in a front and rear direction D1 of the vehicle, and the sash 22 has a groove 221, in which only one edge 3a of the window glass 3 is inserted, and the door structure 1 further comprises a separating member 5 being configured to separate the window glass 3 from the sliding face SL of the guide rail 42 by inhibiting approaching of the window glass 3 to the sliding face SL at an upper end part of the guide rail 42 such that the window glass 3 does not come into contact with the sliding face SL of the guide rail 42 when the window glass 3 swings with the one edge being guided to the sash as a fulcrum.