Abstract: The present invention of an automobile air-conditioning outlet deflection device comprising a main body which is in ring shape, a plurality of crossing rods are disposed within said main body, the intersection point of said crossing rods is connected to a set of deflection blades, said set of deflection blades having a plurality of blades disposed within a ring part, a set of spinning blades located at the other side of said main body, said set of spinning blades spins when air-conditioning blow on it, thus move said set of deflection blades to spin also, a set of gears is disposed on an axial rod of said set of spinning blades, said set of gears is connected to an axial rod of said deflection blades, few blades of said set of spinning blades are relatively shorter than the rest, a speed-slowing blade is connected to each of said short spinning blade, said axial rod of said set of spinning blades is connected to a cover body, said cover body having a circumference side and a plurality of crossing rods, accord