Water collecting and humidifying system applied to cold air extractor hood

The invention relates to the technical field of humidification, in particular to a water collecting and humidifying system applied to a cold air extractor hood, the water collecting and humidifying system comprises a cold end fan, a water tank assembly, a humidifying assembly and a liquid supply assembly, and the humidifying assembly comprises a support assembly, a humidifying part and a heat exchanger; the cold end fan is used for sucking external air from the air inlet and sending the external air out of the air outlet after passing through the cold air system, the water tank assembly is used for storing condensate water generated by the cold air system, the heat exchanger is used for condensing and cooling the external air and collecting moisture in the external air to form condensate water, and a water receiving groove is formed in the support assembly. The water tank assembly is used for collecting condensate water generated by the heat exchanger, the humidifying part is used for absorbing the condensate