The device for cleaning at least one medical hearing unit includes an earpiece, and a space for receiving the earpiece, the space having at least one seat receiving the earpiece and an orifice with a cavity underneath. There is a circulator for a liquid within the space to contact the earpiece. The cavity includes an outlet for flow or aspiration of liquid, an opening opposite, and, below each orifice, a directing device to guide the liquid towards and under each orifice, as far as the outlet, in such a way that liquid flows across the earpiece.