The present invention has the main object of the present invention to provide an air vent structure which can be prevented from relates to an air vent of the vehicle, by configuring the orientation of the discharged air to be flexibly changed, SAT output of the air is reduced. The invention one end fixed to the outer surface of gear retaining clip 10, which 12 is formed and the other end is fixed to the crash pad 1 from the air discharge port and the inner side; So that the front and rear ends are turned in the symmetry, and the center portion of both side surfaces each hinged (20a) (20b) in the crash pad 1 and the fixing clip 10, one side of said fixed gear in accordance with the rotation of the front and rear ends (12 ) and the engagement is formed a turning gear (22 to rotate), has had a knob (24) projecting outward, turning duct (20 attached to the air discharge port inner side) and; Is coupled to a rear portion of the turning duct 20, the stretching duct 30, which is the upper and lower surfaces in accordance with the new turning of the turning duct (20); it characterized in that it comprises a.