Abstract: An atomizer for atomizing a material into fine particles thereof, comprising an atomizing unit and a pump for forcibly supplying the material to the atomizing unit. The atomizing unit comprises: a container having an inner space; an inlet for communicating the inner space of the container to the outside thereof; a honeycomb body being provided in the inner space of the container and having a peripheral surface, a plurality of first holes and a second hole, each of the first holes and the second hole being inwardly bored from the peripheral surface to connect with one another at the inside of the honeycomb body; and an outlet tube being connected to the honeycomb body and extending to the outside of the container for communicating the second hole and the outside of the container. The pump supplies the material into the container through the inlet. A plurality of the atomizing units can be connected in series to use.