The cold mist produced by the ultrasonic aromatherapy humidifier can 100% distribute and maintain the active ingredients of essential oils, so that the essential oils can be more easily absorbed by the human body to achieve maximum effect; the original ecological aroma effect can be felt within 1 to 2 seconds. It is fundamentally different from the traditional heating and burning hot mist methods. Its cold mist technology does not damage any components of essential oils, does not produce secondary pollution, and is safe to use.