The oxygen generator is filled with molecular sieve. When pressurized, it can adsorb nitrogen from the air. The unadsorbed oxygen is collected and purified to produce high-purity oxygen.

Based on the set target blood oxygen value, the oxygen output flow is automatically adjusted according to the change of blood oxygen value within the range of medical order flow. If the patient's blood oxygen value is less than or equal to the target blood oxygen value, the oxygen output will be automatically increased; On the contrary, if the patient's blood oxygen value is greater than or equal to the target blood oxygen value, the oxygen output will be automatically reduced. Thus, the blood oxygen value of patients can be stably controlled within the target blood oxygen value range, and the safety and effectiveness of oxygen therapy can be improved.