The present invention pertains to an air conditioner, the air conditioner according to the present invention comprising: an air conditioner body comprising an air inlet and an air outlet: an input unit for inputting subjective environment information recognized by a user; at least one sensor unit that generates indoor environment information by detecting indoor environment; an environment control module that generates environment control information on the basis of at least one of the environment information input by the user and the indoor environment information; and a control unit that controls the deodorizing module one the basis of the environment control information. wherein the control unit determines an intensity of smell recognized by the user one the bases of the environment control information, controls a deodorizing module so that the deodorizing module operates in a first mode when the intensity of the smell recognized by the user is low, and when the intensity of the smell recognized by the user is high, controls the deodorizing module so that the deodorizing module operates in a second mode, and thus, the air conditioner has excellent effect of enabling user-customized control, increasing the lifespan of a filter, and lowering power consumption.