Oxygen water manufacturing device

PURPOSE: An oxygen-dissolved water producing apparatus is provided to improve the dissolving rate of highly concentrated oxygen by forming micro-bubbles when mixing and dissolving the highly concentrated oxygen. CONSTITUTION: An oxygen-dissolved water producing apparatus comprises a micro-bubble unit and an oxygen generating unit. The micro-bubble unit includes an electric power unit(1), an upper body, a first bubbling unit(3), a second bubbling unit(4), and a lower body. The first bubbling unit is formed with a fixed pumping member and a rotary pumping member. The second bubbling unit includes a fixing member and a rotating member. The oxygen generating unit includes a water storage unit with a discharging line for discharging gas, and an electrolyzing unit.