An air outlet device for an air-conditioning system of a vehicle includes an air outlet assembly disposed at air vents of the air-conditioning system and a control unit. The air outlet assembly includes a plurality of first air doors and a plurality of driving components, the plurality of driving components are respectively connected to the plurality of first air doors, and each driving component is configured to drive the corresponding first air door. The control unit is connected to the plurality of driving components, and is configured to control the plurality of driving components to drive the plurality of first air doors to open or close independently.