The lungs are the organ of the main gas, if often angry and angry easy to make the lungs do not work, so, want to take care of our lungs, fight to lung dysfunction, should maintain a happy mood, not because of a little gas and anger and anger, when necessary, you can read a book, listen to songs, chat and other activities to ease the mood. 5 main reasons for the decline in lung function 1, ageing: the increase in the hardness of the chest wall of the elderly, lung elastic retraction force decreases, respiratory tension decreases, which leads to a decline in lung capacity. 2, air pollution: harmful substances (such as dust, allergens, smoking and other harmful gases), through the respiratory tract directly damage the lungs, resulting in low lung function. 3.Drugs: The main drugs that cause the decline of lung function are: penicillin, sodium p-aminosalicylate, sulfonamides, chlorpromazine, etc. 4, obesity: excessive accumulation of body fat will reduce lung capacity, lung capacity, effective ventilation, etc. 5, emotions: sadness, grief, anger, crying and other negative emotions tend to damage the lungs, resulting in a decline in lung function. Early lung function damage is not yet symptomatic people, you can recover through appropriate exercise, walking, jogging, swimming, playing Tai Chi are more appropriate. At the same time, pay attention to nutrition to keep up, some patients with impaired lung function are in a high metabolic state, energy consumption is several times higher than normal people. Therefore, such people, especially patients with chronic diseases such as chronic obstructive pulmonary disease, should eat less and more meals, and can properly consume more high-protein foods and vegetables. For early detection of diseases, five categories of people must undergo lung function tests: First, long-term smokers. Second, those who repeatedly cough and cough up sputum, indicating the presence of airway or lung diseases. Third, those who feel chest tightness and shortness of breath after activity especially if it is gradually aggravated. Fourth, people who have to be exposed to polluting gases and dust in the working environment. Fifth, people with respiratory diseases, such as bronchial asthma and chronic obstructive pulmonary disease patients. According to Chinese medicine, the lungs manage the skin of the whole body, and whether the skin is moist and white depends on the good function of the lungs. When there are more toxins in the lungs, the toxins will be deposited onto the skin with the action of the lungs, making the complexion look lusterless.