Patients with a clinical oxygen saturation of only 60% indicate a critical condition, which may be life-threatening at any time and requires urgent treatment, and if not treated promptly, may be life-threatening within hours due to oxygen deprivation. However, patients with an arterial oxygen saturation of 60% do not necessarily have no chance of long-term survival. It is recommended that patients receive oxygen therapy as soon as possible to improve the symptoms of reduced oxygen saturation and thus prolong their survival time. The normal value of arterial oxygen saturation is 95%-98%. A value as low as 60% usually represents a severe lack of oxygen in the body, at which point most patients may already have symptoms of progressive central nervous depression such as sensory impairment, cognitive decline, mental discomfort, or even impaired consciousness and coma. Patients who are not treated promptly may suffer from life-threatening hypoxia within a few hours, and some patients may even experience sudden cardiac death. However, if the oxygen saturation is at 60%, the patient receives immediate oxygen therapy, along with intensive care and appropriate nutritional support, which can effectively improve the symptoms of hypoxia and prolong the survival time of the patient. Decreased oxygen saturation is mainly closely related to airway obstruction and lung lesions, and is commonly seen in patients with severe pneumonia, pulmonary fibrosis, acute respiratory distress syndrome, pneumothorax and other diseases. Therefore, it is recommended that patients with related diseases actively treat the primary disease and relieve the cause of oxygen desaturation, thus avoiding such crisis states.