Chronic obstructive pulmonary disease is very much, in our country, in 2017, the flow survey was done, the incidence rate of adults over 40 years old is 8.8%, that is, one out of 12 people has the disease, the causes are: 1, genetic factors, congenital patients and his genes are related; 2, lung underdevelopment, children are not born in full term, poor lung development, narrow airways, airway narrowing is easy to produce inflammation; 3, environmental factors, such as long-term smoking, long-term physical and chemical environment, coal mines, including pollution, are the most common triggers of the disease; 3, environmental factors, such as long-term smoking, long-term physical and chemical environment, coal mining, including pollution, are the predisposing factors of the disease, the most common exacerbation of chronic obstructive pulmonary disease is infection, infection accounts for 80%-90%, the most common infection is bacterial infection, viral, fungal infection in the clinical is relatively little, in addition to this, and climate change factors are also related, for patients with chronic obstructive pulmonary disease, their airways For patients with chronic obstructive pulmonary disease, their airways are highly reactive, so the weather is particularly cool or hot, which will affect them more.