A hydrogen water machine includes a hydrogen generator, a water supplier, a mixing device connecting between the hydrogen generator and the water supplier, and a recirculation pipe connecting between the mixing device and the water supplier. Hence, hydrogen generated by the hydrogen generator is dissolved in the water supplier by the mixing device, thereby generating the hydrogen water. Part of the hydrogen water recirculates through the recirculation pipe to the mixing device. Therefore, the hydrogen concentration in the water is increased owing to the recirculation. Further, the retention of the hydrogen dissolved in the water is maintained to attain a preferable mixing effect.本發明氫水機,其包含有一氫氣產生器,一水供應器,一連接該氫氣產生器、水供應器之混合裝置,以及一連接該混合裝置與該水供應器間之迴流管;是以,利用該混合裝置該氫氣產生器之氫氣溶入於該水供應器供應之水中,而形成一氫水輸出,且該氫水部份再經由該迴流管迴流且再次經該混合裝置處理,如此重覆循環作用下,以提昇該氫水內之氫氣溶於水的含量濃度外,並且同時維持該氫氣溶於水中停留時間,達到更佳的混合效果。3‧‧‧混合設備31‧‧‧氫氣產生器311‧‧‧氫氣源312‧‧‧氫氣輸入管32‧‧‧水供應器322‧‧‧水輸入管321‧‧‧供應源33‧‧‧混合裝置331‧‧‧混流管332‧‧‧加壓器333‧‧‧混合器334‧‧‧輸出管34‧‧‧迴流管
