Pulmonary insufficiency refers to a decrease in pulmonary ventilation and gas exchange function, with some clinical symptoms, such as wheezing after activity, shortness of breath with heart fatigue, chest tightness, and in severe cases, hypoxemia, type I respiratory failure and type II respiratory failure can occur. For pulmonary insufficiency, it is necessary to clarify as soon as possible exactly which disease, such as bronchial asthma, chronic obstructive pulmonary disease, tuberculosis, obstructive pulmonary atelectasis caused by lung tumors, or pulmonary insufficiency caused by other systemic diseases, such as acute left heart failure, pulmonary edema, and uremic lungs caused by chronic renal failure, which can affect pulmonary function. Pulmonary insufficiency that occurs with type I expiratory failure and type II expiratory failure requires advising patients on long-term home oxygen therapy and noninvasive ventilator-assisted therapy to avoid respiratory failure leading to death.