The vaporizing apparatus comprises a disk portion in which a plurality of sheet disks are provided in a stacked configuration, with a top disk being provided on a top of the sheet disks. Each of the sheet disks has a thin sheetlike form and includes a through-hole at a central portion thereof. A shaft extends through these openings and supports the sheet disks and the top disk. The disk portion is accommodated in a chamber formed on a base. A liquid is introduced through a flow passage into the openings of the sheet disks of the disk portion in the chamber. Heaters are provided within the base. A piezoactuator is provided so as to bias the disk portion in the chamber from a side of the top disk. The piezoactuator adjusts the gaps between the disks and opening/closing of the flow passage.