The invention provides a ventilator. The ventilator is characterized in that a diffuser (3) is installed on the inner side of a front panel (1), the diffuser (3) and the front panel (1) form a container (5), and a light-emitting part (4) is arranged in the container (5); the edge of a back panel (2) extends out an extending portion (21), an air inlet is formed between the front panel (1) and the edge of the extending portion (21), an air inlet channel is formed between the diffuser (3) and the extending portion (21), light emitted by the light-emitting part (4) reflects on the inner wall of the extending portion (21), and the reflected light is emitted from the air inlet. According to the ventilator, the air inlet channel is also an emitting channel of the reflected light of a light source, the air inlet channel and the emitting channel of the reflected light of the light source are combined to be one, the lighting light source is avoided from shooting in human eyes directly, and the experience of a user is improved.