A micromist sauna device comprises: a circulating air supply device (11) for circulating indoor air, a heating device (12) for heating air, and a humidifier (20) arranged at the downstream side of the heating device (12) and used for humidifying air. The lower part of the humidifier (20) is provided with a water storage portion (21) for storing water, and the upper part is provided with a humidification portion (22) for sucking up the water in the water storage portion (21) and spraying mist； and a crusher (60) is fixedly arranged around the humidification portion (22), the crusher (60) has multiple ribs (61) and is cone-shaped, and an opening (62) of an airflow channel is formed between the multiple ribs (61). The advantage of the device is that the efficiency of contact between air and water droplets is high, so that the humidification loss and the heat loss are reduced.
