Elevated partial pressure of oxygen carbon dioxide is commonly associated with type II expiratory failure and respiratory acidosis due to carbon dioxide retention. Due to insufficient ventilation, carbon dioxide excretion is reduced and trapped in the body causing respiratory failure and acidosis. Generally, establish venous access, oxygen therapy, anti-infection treatment and so on are given. 1. Establishment of intravenous access: after establishing intravenous access for patients with elevated partial pressure of carbon dioxide, adrenocorticotropic hormone, aminophylline and other drugs can be given as prescribed by the doctor for treatment, and tracheal intubation or tracheotomy can be used in serious cases. 2. Oxygen therapy: For patients with elevated partial pressure of carbon dioxide, low-flow oxygen inhalation can increase ventilation, reduce carbon dioxide retention, and relieve patients’ discomfort. 3. Anti-infection treatment: patients with elevated partial pressure of carbon dioxide can be given anti-infection treatment as prescribed by doctors, such as using cephalosporin antibiotics or levofloxacin hydrochloride injection and other intravenous drip, to treat lung infection and improve lung function. Patients with elevated partial pressure of carbon dioxide should consult a doctor in time, and choose the appropriate program for treatment under the guidance of the doctor.