A mist generator (1) provided with a mist generation mechanism, which generates mist from a liquid, a tubular housing (12), which includes a discharge port (2) that discharges the generated mist, and a discharge port cover (13), which is movable in an axial direction of the housing (12) to open and close the discharge port (2). The discharge port cover (13) extends in a circumferential direction of the housing (12) to surround an outer circumference of the housing (12).