It is fresh convenient for air the present invention relates to a kind of air freshener generating device and the fresh method of air and using the air freshener of its activation volatilization, it is higher than fiducial temperature by the temperature of the air of maintenance, contains air freshener from air blower to the inlet tube air freshener for the side for using heating unit discharge air. Said effect according to the present invention, it includes: the temperature of temperature measuring unit (30) measurement air from side air inlet pipe (14) when inside/outside air switching door selectively opens or closes that there is air freshener generating device outlet discharge air freshener and partial air, which to be flowed into air regulator by internal or external in air through hair dryer, Main body (12) with the air freshener of heating unit (20) activation volatilization is by maintaining the temperature at air from the side of air inlet pipe (14) to when being higher than reference temperature, by the air of heating, wherein temperature is lower than fiducial temperature by temperature measuring unit (30).The 2014 of copyright KIPO submissions