Oxygen concentrator a day suck how long, mainly according to the purpose of oxygen, disease, symptoms and other aspects and determine, can not be generalized. If it is hypertension, coronary heart disease, cerebral stroke, cervical spondylosis and other chronic cardiovascular and cerebrovascular disease patients, you can inhale oxygen in the morning, midday and evening, and each inhalation of oxygen for about 1 hour. If it is sub-healthy state or insomnia, each time you can inhale oxygen for 30-60 minutes. In case of patients with emphysema and pulmonary heart disease, if there is no obvious respiratory failure, heart failure and erythrocytosis, they can inhale oxygen for 6 hours a day. However, in patients with combined cardiopulmonary insufficiency and secondary erythrocytosis, oxygen intake can be extended to 10-15 hours per day. In the case of critically ill patients and rescue patients, it is necessary to use the oxygen concentrator to inhale oxygen 24 hours non-stop alternately. In addition, the oxygen should also pay attention to the control of oxygen flow according to the specific conditions, if the patient does not have the underlying disease, it is not recommended to absorb oxygen health care.