Chronic Obstructive Pulmonary Disease (COPD) is a common, frequent, highly disabling and fatal chronic respiratory disease. It is basically equivalent to “chronic bronchitis” or “emphysema” in the past. The World Health Organization estimates that COPD is the 4th or 5th leading cause of death worldwide, comparable to AIDS, and will likely become the third leading cause of death worldwide by 2020. In 2001, the incidence of COPD in China was 3.17%, and in 2003, an epidemiological survey in Guangdong Province showed that the overall prevalence of COPD was 9.40%. In Tianjin, the prevalence of COPD in the population over 40 years old is 9.42%, which is close to the recent prevalence rates of 9.1% and 8.5% in the same age group in Europe and Japan, and compared with the results of the 1992 survey in China, the prevalence of COPD has increased three times. The number of deaths due to COPD worldwide reached 2.74 million in 2000 alone, with a 22% increase in mortality over the past 10 years. The prevalence of COPD in Shanghai is 3%. The latest statistics from the Ministry of Health show that chronic respiratory diseases rank first in disease mortality, with urban areas ranking fourth and rural areas being the number one disease killer. Sixty percent of patients suffering from such diseases are suffering from chronic obstructive pulmonary disease, which is a destructive lung disease that gradually weakens the respiratory function of patients, mainly caused by smoking, and people over 40 years old are more prone to the disease, which is not easily detected, but has a high morbidity and mortality rate. At present, there are about 25 million patients with chronic obstructive pulmonary disease in China, with 1 million deaths and 5 to 10 million disabilities each year. According to a survey conducted in Guangzhou, the mortality rate of slow obstructive pulmonary disease is 8% in people over 40 years old and up to 14% in people over 60 years old. The quality of life of patients suffering from chronic obstructive pulmonary disease is greatly reduced. The impaired lung function makes the patient’s respiratory work increase and energy consumption increase. Even when sitting or lying down to breathe, such patients feel like carrying a burden up a hill. Therefore, once the disease is diagnosed, not only does the patient’s quality of life decrease, but also the cost of treatment such as medication and oxygen therapy over the years is large, which brings a heavy burden to the family and society. Therefore, it is important to understand the knowledge of COPD prevention and treatment to improve the health of people.