The invention provides an air conditioner, which comprises an air conditioner body and an air outlet part, wherein the air outlet part comprises an air outlet frame and a rolling support part, the air outlet frame is rotationally arranged at the upper end of the air conditioner body through the rolling support part in a way of going around an axial line of the air conditioner body, the rolling support part comprises a seat ring and a tooth ring, the seat ring is fixedly arranged on the upper end surface of the air conditioner body, the tooth ring is rotationally arranged on the seat ring relative to the seat ring in a way of going around the axial line of the seat ring, a rolling support element is arranged between the lower end surface of the tooth ring and the seat ring, and the air outlet frame is fixedly arranged on the tooth ring. The air conditioner, according to the invention, has the advantages that through the matched arrangement of the tooth ring and the seat ring, the rolling support element is arranged between the lower end surface of the tooth ring and the seat ring, so the tooth ring can flatly, stably and flexibly rotate relative to the seat ring, further, the air outlet frame arranged on the tooth ring is driven, the air outlet range is enlarged, and the air outlet dead corner is eliminated.