Abstract: An ozone water manufacturing device is provided. The ozone water manufacturing device includes a mixer and an ozone generator. The mixer includes a water inlet, a water outlet pipe, a tapered pipe, an importing part and a mixing chamber, wherein the tapered pipe is disposed close to the water inlet, the mixing chamber is disposed close to the water outlet pipe, and the importing part is disposed between the mixing chamber and the tapered pipe. The ozone generator is coupled to the importing part. The mixer disclosed by the present invention can be used to avoid a loss of water pressure, enhance solubility of the ozone, and fully mix water with the ozone.