Pulmonary alveoli are mainly due to the rupture of small emphysema in the lungs, which leads to the fusion of large air sacs, and is one of the manifestations of emphysema. In prevention, it is important to pay attention to not breathing too hard or too fast, but to inhale slowly and exhale slowly, and to prevent any trauma in daily life. In addition, we should also pay attention to a rich diet to prevent malnutrition, try to consume more vegetables and fruits rich in multivitamins, trace elements, minerals and other bright colors, intake of chicken breast, duck breast and high quality protein such as milk, soy milk, eggs, etc. You can also eat more nuts, which can nourish the lung tissue and make the lung tissue more elastic, which can enhance lung function. For the emergence of acute attacks of chronic inflammation, such as chronic bronchitis, the emergence of a bacterial infection should be early use of sensitive antibiotics, such as amoxicillin, clindamycin, etc. to prevent the spread of serious infections lesions.