Mute USB (Universal Serial Bus) humidifier

The invention discloses a mute USB (Universal Serial Bus) humidifier, and relates to the field of air humidification equipment. The mute USB humidifier is characterized in that a humidification bottle is made of ABS (Acrylonitrile Butadiene Styrene) transparent plastics and can be used for conveniently observing the water amount in the humidification bottle and judging when water adding can be carried out; a heating plug is arranged in an opening of the humidification bottle, a water absorption pipe is inserted in the center position of the heating plug, thus water at the bottom part of the humidification bottle is enabled to be successfully evaporated to the outside of the humidification bottle, and the working stability of the mute USB humidifier is ensured; a filter cover is arranged at the outer part of the opening of the humidification bottle, thus impurities can be filtered, and the purity of water steam is ensured; the filter cover is in threaded connection with the bottle opening of the humidification bottle, and thus disassembling and water adding are convenient; the part, which is in contact with the bottle opening of the humidification bottle, of the heating plug is made of a flexible material; the heating plug and the bottle opening of the humidification bottle are in interference fit, and thus the working noise of the mute USB humidifier is enabled to be low; the heating plug is connected with a regulating switch and a USB plug through an electric wire, and thus the heating plug can be directly plugged into a computer for use, convenience and practicability are realized, and the humidification speed can be regulated through the regulating switch.