Strengthening nutrition: Due to reduced nutrient intake, poor digestion and absorption, increased energy demand and enhanced catabolism, patients with chronic obstructive pulmonary disease (COPD) often suffer from malnutrition, which results in low immune function and often leads to secondary infections. Malnutrition, immunocompromise and infection are important pathogenic factors for patients with chronic obstructive pulmonary disease (COPD), which are causative of each other, inextricably linked, and form a vicious circle. When patients with chronic obstructive pulmonary disease (COPD) enter the stabilization period, their loss of appetite will improve due to the reduction of cough and wheezing, and during this period, nutrition should be actively strengthened. Exercise rehabilitation: When patients with chronic obstructive pulmonary disease exercise, they should choose the exercise mode, exercise intensity and exercise time that suit their conditions; the amount of exercise should be started from a small amount, according to their strength, and gradually enhance the ability to tolerate exercise. At the beginning of the exercise, to walk slowly, in order not to appear short of breath to the degree. Each adhere to 5-10 minutes, 4-5 times a day. After gradually adapting, the exercise time can be extended to 20-30 minutes each time, 3-4 times a day. Exercise methods can also be gradually transitioned to jogging, climbing stairs, bicycling, housework, tai chi, radio gymnastics, breathing exercises, qigong, and so on. Quit smoking completely: Quitting smoking, reducing occupational dust inhalation as well as reducing indoor and outdoor air pollution are important measures to prevent the development of chronic obstructive pulmonary disease (COPD). The disease of chronic obstructive pulmonary disease has a great relationship with long-term smoking. About 20% of smokers will develop COPD. The only way to control the condition is to stop smoking, and quitting is the first step in protecting lung function. Quitting smoking is the first step in preserving lung function. It is also the most effective and cost-effective treatment available. Coughing and sputum can be improved within a week of quitting, and the worsening of long-term symptoms can be slowed down and life prolonged. Healthcare professionals can be consulted to help patients stop smoking through behavioral therapy, psychological support, and medication.