The invention discloses a door structure capable of preventing inclining deformation. The door structure comprises a door frame and a door plate, one side of the door plate is hinged to the door frame, and a spacing A is reserved between the lower surface of the door plate and the lower surface of the door frame; the door frame comprises a first side edge frame, a second side edge frame and a doorhead frame, wherein the first side edge frame is hinged to the door plate, the second side edge frame and the first side edge frame are arranged oppositely, and the door head frame is located betweenthe first side edge frame and the second side edge frame and is connected with the first side edge frame and the second side edge frame; the lower surfaces of the first side edge frame and the secondside edge frame are located in the same plane; a supporting block which is fixedly connected with the second side edge frame is arranged on the side, close to the first side edge frame, of the secondside edge frame; the surface of the side, close to the door head frame, of the supporting block is an inclined face; and the maximum spacing between the inclined face and the lower surface of the second side edge frame is matched with the spacing A, so that the lower surface of the door plate abuts against the inclined face when the door plate is in the closed state. The door structure capable ofpreventing inclining deformation can avoid the problem that a door lock of the door plate cannot be locked tightly or opened due to inclining dislocation.