To provide an ozone water generator solving problems in which, in a method for generating ozone water inside a washing machine and using it for washing machine water in the ozone water washing using a household full-automatic washing machine, the washing machine itself incorporates an ozone water generator, creating a very expensive product, and it is literally impossible to install the ozone water generator to the washing machine already in use.

This ozone water generator for the full-automatic washing machine of either of an electrolysis type or an ejector type, is attached to a tap water supply faucet, is connected with a water supply pipe from a washing machine and can easily supply ozone water. The electrolysis type requires an external power supply, however, the ejector type is equipped with a power generator in the apparatus, rotates a turbine using a tap water releasing pressure and generates ozone water by the generated output. When the water supply is cut off in the washing machine side, this apparatus jets out water from the ejector hole by water pressure to damage the ozone generation body. Therefor, the ejector hole is closed with a spherical body and ozone gas is supplied via a vessel for temporarily storing leakage water so as to supply the ozone water to the washing machine inside without any damage of the apparatus.