The lungs are one of the important organs in the human body, bringing oxygen into the body and expelling carbon dioxide and other waste gases through respiratory movements as well as gas exchange. The health of the lungs is very important to the human body, generally can be taken to increase nutrition, appropriate exercise, avoid smoking and other measures, can effectively protect the health of the lungs. 1, increase nutrition: to ensure that the body has enough protein, fat, carbohydrate intake, can also consume more lung-clearing and lung moistening food, such as snow pear, lotus seeds, lily, honey, etc., can make the body have enough resistance, for the prevention of respiratory tract infection, protect the health of the lungs, has an important role; 2, appropriate exercise: can effectively protect the lungs, such as regular walks, jogging, aerobic exercises such as radio exercises, can make the lung function can be maintained at a certain level of health, improve the resistance of the lungs to the outside world; 3, avoid smoking: smoking, especially long-term active smoking, smoke will damage the non-specific protection mechanism of the respiratory tract, leading to trachea, the bronchi, interstitial lung, lung parenchyma damage, affecting the health of lung function. To avoid active and passive smoking; 4, improve the indoor environment: usually do a good job of indoor hygiene, regular window ventilation, to maintain the appropriate temperature and humidity. Try to wear a mask when you go out, especially in autumn and winter; 5, keep a happy mood: you can laugh more often to promote the lungs and protect the health of the lungs; 6, drink the right amount of water: in daily life, you should also drink more water to keep the respiratory tract and lungs lubricated to avoid coughing discomfort caused by dryness; 7, regular medical checkups: it is recommended that regular medical checkups be conducted on the body, through which you can understand the state of health. It is also important to conduct relevant examinations of the lungs, so that if abnormalities are found, they can be dealt with in a timely manner.