Alveoli are the main site of gas exchange in the lungs. They are multifaceted vesicles with openings. The alveoli are thin-walled, with a diameter of about 200 to 250 micrometers, and there are about 300 to 400 million alveoli in the adult lungs, with a total area of up to 100 m. 2. Ruptured alveoli, also known as lung perforation, can be caused by tuberculosis, emphysema, etc., and can also be congenital or caused by trauma (gunshot, stabbing, or broken ribs), and can be caused by long-term drug use. There are many causes of alveolar rupture, such as inflammatory reactions, trauma, foreign objects entering the lungs, sudden increase in ambient air pressure, and emphysema. Also, alveolar rupture occurs more often in tall, thin people. Other experts believe that the main cause of alveolar rupture is pneumothorax, which is a condition in which alveoli rupture occurs under the influence of some violent external forces. So if you suffer from pneumothorax, first of all, you should pay attention not to engage in strenuous exercise, not to carry heavy things, and not to let the chest be subjected to big impact. In addition, it is also important to prevent colds and flu, because when colds and coughs, it is also possible to cause the rupture of the alveoli. Pneumothorax should be treated promptly, and can be treated with techniques such as long needle aspiration, or closed drainage, as untimely treatment may be life-threatening.