A fine bubble generating apparatus comprising: an electrolysis unit that is configured to electrolyze raw water to produce electrolyzed water and cracked gas; a gas-liquid delivery unit that is configured to mix the electrolyzed water and the cracked gas and delivers mixed liquid, wherein the gas-liquid delivery unit includes a cylindrical portion that has a cylinder with two base surfaces, a first surface and a second surface, and that is configured to cause electrolyzed water supplied from a plurality of paths to flow from the first surface toward the second surface, a plurality of introducing portions (71a to 71d) that is configured to introduce the electrolyzed water from the first surface or from vicinity of the first surface into the cylindrical portion such that the electrolyzed water swirls inside the cylindrical portion, and an outlet port provided at or in vicinity of a center of the second surface; a first pipe that is configured to supply the electrolyzed water and the cracked gas from the electrolysis unit to the gas-liquid delivery unit in a hermetically sealed state; a fine bubble generating unit that is configured to generate fine bubbles in the mixed liquid supplied from the gas-liquid delivery unit, by physical collisions; a second pipe (15A, 16A) that is configured to supply the mixed liquid from the gas-liquid delivery unit to the fine bubble generating unit in the hermetically sealed state; a pump that is provided in the second pipe (15A, 16A) and that is configured to pump the mixed liquid to the fine bubble generating unit under pressure; and a bubble electrolyzed water supply unit that is configured to release the pressure at the moment the electrolyzed water with the fine bubbles supplied from fine bubble generating unit is discharged, wherein the system from the electrolysis unit to the fine bubble generating unit is configured as a hermetically sealed system. an electrolysis unit that is configured to electrolyze raw water to produce electrolyzed water and cracked gas; a gas-liquid delivery unit that is configured to mix the electrolyzed water and the cracked gas and delivers mixed liquid, wherein the gas-liquid delivery unit includes a cylindrical portion that has a cylinder with two base surfaces, a first surface and a second surface, and that is configured to cause electrolyzed water supplied from a plurality of paths to flow from the first surface toward the second surface, a plurality of introducing portions (71a to 71d) that is configured to introduce the electrolyzed water from the first surface or from vicinity of the first surface into the cylindrical portion such that the electrolyzed water swirls inside the cylindrical portion, and a cylindrical portion that has a cylinder with two base surfaces, a first surface and a second surface, and that is configured to cause electrolyzed water supplied from a plurality of paths to flow from the first surface toward the second surface, a plurality of introducing portions (71a to 71d) that is configured to introduce the electrolyzed water from the first surface or from vicinity of the first surface into the cylindrical portion such that the electrolyzed water swirls inside the cylindrical portion, and an outlet port provided at or in vicinity of a center of the second surface; a first pipe that is configured to supply the electrolyzed water and the cracked gas from the electrolysis unit to the gas-liquid delivery unit in a hermetically sealed state; a fine bubble generating unit that is configured to generate fine bubbles in the mixed liquid supplied from the gas-liquid delivery unit, by physical collisions; a second pipe (15A, 16A) that is configured to supply the mixed liquid from the gas-liquid delivery unit to the fine bubble generating unit in the hermetically sealed state; a pump that is provided in the second pipe (15A, 16A) and that is configured to pump the mixed liquid to the fine bubble generating unit under pressure; and a bubble electrolyzed water supply unit that is configured to release the pressure at the moment the electrolyzed water with the fine bubbles supplied from fine bubble generating unit is discharged, wherein the system from the electrolysis unit to the fine bubble generating unit is configured as a hermetically sealed system.