Chronic obstructive pulmonary disease is a lung disease characterized by incomplete reversible airflow limitation and forms a progressive development. It is clinically characterized by chronic recurrent cough, coughing sputum, dyspnea, acute exacerbations and accompanying chest tightness and wheezing. One is to instruct the patient to use oxygen therapy, using continuous low-flow oxygen for no less than 15 hours a day, to teach the patient to cough and sputum effectively, and to reasonably instruct the patient to apply anti-infective cough and sputum medications as prescribed by the doctor because chronic obstructive pulmonary disease is a chronic disease. It is also important to teach patients to take care of their family members because of their long history of illness, recurrent attacks and weak constitution. It is also important to provide timely guidance to explain the relevant knowledge and introduce them to examples of effective treatment to increase the confidence of patients. Then there is diet, because the patient is bedridden with little activity, appetite is relatively lacking, it is recommended that patients eat low-sugar, high-calorie, high-protein, easy-to-digest food, while persuading patients to quit smoking, avoid passive smoking, prevent colds, avoid cold, overexertion. When the temperature changes, add or remove clothes in time, avoid public places as much as possible during the cold epidemic season, and go to the hospital in time if coughing, coughing, fever, chest tightness and shortness of breath worsen.