The utility model discloses an air outlet device of a vehicle air conditioner. The device comprises a main air supply box, a strip-shaped air outlet box and an air inducing pipeline, the strip-shapedair outlet box is located on one side of the main air supply box. the main air supply box is connected into a whole; the strip-shaped air outlet box is communicated with the main air supply box through a plurality of side vent holes; the strip-shaped air outlet box is provided with a plurality of air outlets; the air inducing pipeline is communicated with the main air supply box; the air directionof the air inducing pipeline is perpendicular to that of the main air supply box; a first guide plate and a second guide plate are arranged in the main air supply box; the first guide plate and the second guide plate are obliquely arranged relative to the air direction of the air-induced pipeline; the first flow guide plate and the second flow guide plate are identical in inclination direction and both obtuse in inclination angle, a certain flow guide interval is reserved between the first flow guide plate and the second flow guide plate, the communication point of the air guide pipeline andthe main air supply box is located in the flow guide interval, and a certain gap is reserved between the first flow guide plate and two side walls of the main air supply box. The air conditioning system has the advantage that uniform air conditioning air can be obtained in the guest room.