The oxygen humidifier is an oxygen accessory intended to provide additional humidity to persons requiring oxygen therapy. The oxygen humidifier uses the bubble type humidification process to provide stable moisture content for maximum patient comfort during the administration of oxygen. The connector use the screw structure, this structure assure the Oxygen cannot overflow. And the connection between tube and adapter should be firm. It is adopt the copper alarm valve, the low of the alarm is 2L/Min. The product is autoclavable with high pressure and temperature at 250°F/121°C and 10min. Separating the bottle and cap assemblies apart during the sterilization process is highly recommended.