Abstract: A portable nebulizer provided by the invention is particularly suitable for using with a liquid contained in a capsule or in a container made of a disposable material that can be easily damaged, the portable nebulizer comprises a driving unit for driving an atomizing unit, and a containing unit for containing the container, the containing unit has a breaking part for breaking the container to facilitate outflow of the liquid, after the liquid flows into an inner space of a main body of the containing unit because the container is damaged by the breaking part, the liquid can be atomized by the atomizing unit to produce a mist capable of escaping to the outside of the main body for a user to use the liquid mist conveniently.