How long a patient with severe chronic obstructive pulmonary disease (COPD) can live varies from person to person, ranging from a few months to more than 5 years. The severity and prognosis of the disease need to be considered based on the results of pulmonary function tests and other tests. The full name of chronic obstructive pulmonary disease (COPD) is chronic obstructive pulmonary disease (COPD), which is mainly a respiratory symptom caused by airflow limitation, manifested as coughing, coughing up sputum, dyspnea, wheezing, fatigue, etc. It is necessary to carry out pulmonary function tests, chest radiographs or lung CT, blood gas analysis and other tests, and there are four types of grading according to the pulmonary function tests, with grades 3 and 4 belonging to the seriousness and extremely seriousness. Treatment can use bronchodilators, hormones, cough and phlegm, anti-infection and other drugs, and oxygen maintenance therapy, if the patient’s condition is stable and improved after treatment and maintain a stable state, the survival time can be extended to reach 5 years and above, if the treatment is not active and timely, the life expectancy will be significantly shorter, as short as a few months time. It is recommended that patients cooperate with doctors to actively treat the disease and avoid delaying the disease and blindly using drugs.