The invention provides an air conditioner with resource-saving, light and energy-saving advantages for loading a electrostatic atomization apparatus and making indoor environment comfortable. The air conditioner of the invention comprises an air supply fan for conveying indoor air to a heat converter, the electrostatic atomization apparatus, a water generator for supplying atomizing water to an atomization part of the electrostatic atomization apparatus, a cooling plate which forms the water generator part and enables the water in the air condensation, a Pelier element for cooling the cooling plate, a water guide path for guiding the condensation water generated by above water generator part to said atomization part, a main air flow channel formed by the running of said air supply fan from an air suction inlet to an outlet, and a sub air flow channel from an opening for air flowing in formed outside of the main air flow channel to an opening on an air duct wall of the main air flow, wherein a heat radiation board on the heat radiation surface of the Pelier element and the cooling plate on the cooling surface are arranged in turn in the flow channel of the sub air flow.
