To provide a door frame which prevents the generation of a rattle of a door while securing the necessary amount of ventilation.

In this door structure wherein the door frame 1 and the door 2 are mounted in the opening of a wall body of a building, buffer materials 4 are intermittently provided in a vertical door stop 31 on the side of a door end; a door stop 32 is also provided on a door-hinge side; and gaps H1, H2, H3, H4, H5, H6 and H11, which enable the passage of air, are each provided between the door 2 and the door hinge-side and door end-side door frames 12 and 12, and between the door 2 and the door hinge-side and door end-side door stops 32 and 31.