Disclosed is an oral cleaner. An oral cleaner according to an exemplary embodiment may include: a cleaning module including a body, and a brush unit connected to one side of the body； a receptacle connected to the other side of the body and including a receiving space opened at an upper portion thereof； a container inserted into the receiving space of the receptacle； and a flow unit provided in the cleaning module and configured to allow a fluid to flow between the brush unit and the container.
