An oxygen regulator is used to control the rate of oxygen flow from an oxygen cylinder. The oxygen regulator is made of high-quality copper material through precision processing. The inner layer of the oxygen regulator is made of stainless steel and is corrosion-resistant. The oxygen cylinder regulator features a water bottle that acts as an air humidifier. Air humidification reduces dryness in the throat and nose, resulting from direct air pumping into the respiratory system.