Oxygen 89 is 89% oxygen saturation, indicating a moderate hypoxic state. It is recommended to consult a doctor for timely treatment and administer oxygen under the doctor’s guidance. Smoking should be avoided when inhaling oxygen, and unauthorized changes in oxygen concentration should also be avoided to prevent discomfort. 1. Oxygen saturation refers to the percentage of blood combined with oxygen and is an important parameter in the respiratory cycle. Normally, the blood oxygen saturation is not less than 95%. When the lung ventilation function and gas exchange function are impaired, it will lead to the decrease of blood oxygen saturation and the emergence of lung fibrosis, emphysema and other diseases. 2. Oxygen saturation of 89% patients can be continued under the guidance of a professional doctor for oxygen treatment, oxygen should be avoided at the same time smoking and other bad habits, close observation of their own oxygen saturation. If the blood oxygen saturation continues to be stable above 95%, then under the guidance of a doctor, according to their own mental state, appropriate to reduce or stop the oxygen intake. 3. In addition, when inhaling oxygen, do not change the oxygen concentration or flow rate without authorization to avoid discomfort. If your physical condition permits, you can do aerobic exercise such as jogging in your daily life, which can strengthen the function of lung gas exchange to a certain extent and avoid the emergence of hypoxia. It is recommended that patients seek timely medical treatment and standardize the treatment under the guidance of doctors.