A hybrid heat pump apparatus comprising: a housing; a first channel formed in the housing such that first air can passe through the first channel; a second channel formed in the housing such that second air can passe through the second channel; a desiccant rotor rotatably mounted in the housing and disposed over the first and second channels (110,120), so that the desiccant rotor is configured to be dried by the first air passing through the first channel and to absorb moisture from the second air passing through the second channel; a heating unit disposed upstream of the desiccant rotor so as to be closer to an introduction side of the first air in the first channel, the heating unit configured to heat the first air passing therethrough; a cooling unit disposed upstream of the desiccant rotor so as to be closer to a discharge side of the second air in the second channel, the cooling unit configured to selectively cool the second air passing therethrough; a refrigerant circulation unit comprising a compressor, a first heat exchanger, and a second heat exchanger, and a water circulation pipe in which water can circulate, wherein the water circulation pipe is connected to the second heat exchanger such that the water exchanges heat with the refrigerant in the second heat exchanger when circulating therein, characterized in that the refrigerant circulation unit further comprises a four-way valve, the first heat exchanger being disposed downstream of the cooling unit so as to be closer to the discharge side of the second air in the second channel, and in that a refrigerant can circulate in the refrigerant circulation unit in order of the compressor, the first heat exchanger, the second heat exchanger, and the compressor or vice versa, according to control of the four-way valve. a housing; a first channel formed in the housing such that first air can passe through the first channel; a second channel formed in the housing such that second air can passe through the second channel; a desiccant rotor rotatably mounted in the housing and disposed over the first and second channels (110,120), so that the desiccant rotor is configured to be dried by the first air passing through the first channel and to absorb moisture from the second air passing through the second channel; a heating unit disposed upstream of the desiccant rotor so as to be closer to an introduction side of the first air in the first channel, the heating unit configured to heat the first air passing therethrough; a cooling unit disposed upstream of the desiccant rotor so as to be closer to a discharge side of the second air in the second channel, the cooling unit configured to selectively cool the second air passing therethrough; a refrigerant circulation unit comprising a compressor, a first heat exchanger, and a second heat exchanger, and a water circulation pipe in which water can circulate, wherein the water circulation pipe is connected to the second heat exchanger such that the water exchanges heat with the refrigerant in the second heat exchanger when circulating therein, characterized in that the refrigerant circulation unit further comprises a four-way valve, the first heat exchanger being disposed downstream of the cooling unit so as to be closer to the discharge side of the second air in the second channel, and in that a refrigerant can circulate in the refrigerant circulation unit in order of the compressor, the first heat exchanger, the second heat exchanger, and the compressor or vice versa, according to control of the four-way valve.