Oxygen concentrator is mainly used in supply oxygen to improve the body's physiological and biochemical environment, promote the virtuous circle of the metabolic process to cure disease, relieve symptoms and promote rehabilitation and prevention of disease and improving health.Clinical practice has proved that oxygen therapeutics, with its unique treatment mechanism of acute and chronic ischemia oxygen deficiency symptoms in clinical departments and secondary disease caused by hypoxia, can effective treatment effect.Appropriate resuscitation, and improve microcirculation, alleviate as necessary to maintain alveolar gas oxygen partial pressure of the respiratory system load, reduce to maintain necessary such as cardiac load effect of arterial blood oxygen partial pressure.Therefore, in the aspects of clinical medicine, preventive medicine, first aid medicine, geriatric medicine, rehabilitation and health care medicine, oxygen therapy and oxygen care have an irreplaceable important role and broad development prospect.In the case of hypoxia or hypoxia, oxygen concentration can be increased by adding oxygen to oxygen, so as to improve the oxygen content of arterial blood and improve the oxygen condition of tissues, which is called oxygen therapy.In general, it is used to correct the pathologic hypoxia, as an adjuvant treatment of disease, called oxygen therapy;Among them, for the victims of serious illness and accident, it is called oxygen rescue;It is used to supplement heavy mental workers, elderly people, pregnant women and patients with chronic disease rehabilitation, and to supplement various environmental hypoxia, as the prevention of hypoxia, called oxygen health care.