Abstract: Disclosed is a portable container with a refill structure, which includes: first and second containers that are open towards each other and form a contents receptacle space by being inserted in a watertight and variable way and communicating with each other; a one-way valve attached to the first container to allow the contents to be introduced; and a pump unit attached to the second container to release the contents held in the receptacle space through a nozzle. A negative pressure is generated in the receptacle space by pulling out the first and second containers in a watertight way.