Disclosed is a desiccant air conditioner driving system using a heat pump capable of superheating and supercooling a refrigerant. The desiccant air conditioner driving system using a heat pump capable of overheating and supercooling the refrigerant includes a second air heat source heat exchanger that supplies hot or cold air to an indoor direction, a dehumidifier that dehumidifies outside air and includes a regeneration unit and a dehumidifier, moisture in the dehumidifier A desiccant air conditioner comprising a first air heat source heat exchanger to remove, and a first water heat source heat exchanger disposed between the first air heat source heat exchanger and the dehumidifying unit; According to an operation mode, a high-temperature refrigerant is initially supplied to any one of the first air heat source heat exchanger and the second air heat source heat exchanger, and the second air heat source heat exchange is performed by supercooling the high temperature refrigerant passing through heat exchange in the first heat exchanger. a heat pump configured to supply the air; and a system controller (not shown) for controlling the heat pump and the desiccant air conditioner in a first operation mode or a second operation mode according to a season.
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