The presence of alveoli in the left upper lung should be considered according to the size of the alveoli, the presence or absence of clinical symptoms and the distribution of the alveoli, and may require general treatment, drug treatment, surgical treatment and other ways of treatment. 1. General treatment: If the alveolus is small, without any clinical symptoms, such as chest tightness, shortness of breath, etc., no special treatment is needed, usually pay attention to rest and avoid strenuous exercise. 2. medication: when the alveoli are more, spreading over the whole upper lobe of the left lung, there is no clinical indication for surgery, i.e., no clinical manifestations, no rupture of alveoli, no pneumothorax formation, etc., the patient with heavy asthma can follow the doctor’s instructions to inhale bronchodilators such as salbutamol, terbutaline, etc., in order to achieve the effect of calming the asthma, and when there is a bacterial infection, carry on the anti-infection treatment, and take cephalosporin or penicillin antibiotics according to the doctor’s instructions. 3. Surgery: Surgery can be considered when the rupture of pulmonary alveolus causes spontaneous pneumothorax or hemopneumothorax, or when the pulmonary alveolus is large in size and compresses the neighboring lung tissues, and when there are clinical manifestations, such as tightness in the chest, shortness of breath, hemoptysis, chest pain in a few patients, which has affected the lung function, or when the pulmonary alveolus is infected again and again. People with left upper lung alveolus, once the sudden symptoms of chest pain and shortness of breath, should promptly go to the hospital, may be the occurrence of pneumothorax.