The invention discloses a heat recovery type evaporation-condensation type water cooling unit and belongs to the technical field of air conditioner units. An existing evaporation-condensation type water cooling unit is low in heat recovery rate and low in hot-water recycled temperature in a heat recovery working condition. A water cooling channel performing heat exchange with a refrigerant channel B of a flooded evaporator is additionally arranged in the flooded evaporator, the water cooling channel is connected with a water collection pool through a water pipe to take water from the water collection pool to perform heat exchange with the refrigerant channel B; equivalently, an overheating device is additionally arranged in the flooded evaporator, the low-pressure low-temperature saturated gaseous refrigerant in the flooded evaporator becomes supersaturated vapor after performing full heat exchange with the cooling water at the temperature of about 25 DEG C introduced from the water collection pool, the suction temperature and the suction superheat degree of a compressor are increased accordingly, and the discharge temperature of the compressor is increased; and by means of the heat recovery type evaporation-condensation type water cooling unit, the problems that the evaporation-condensation type water cooling unit is low in heat recovery rate and low in hot-water recycled temperature in the heat recovery working condition are solved.