Compression of the left lung tissue by 10% can be self-healing, and the corresponding condition is a relatively mild type of pneumothorax, which can be recovered on its own under the guidance of the clinician. Pneumothorax is mainly caused by the entry of gas into the chest cavity, and after the corresponding condition occurs, it will cause the lung tissue to be compressed, causing breathing difficulties. Compression of only 10%, generally belongs to a relatively mild type, pay attention to bed rest, oxygen treatment, reduce talking, help the absorption of gas as well as the reopening of the lungs, a large part of the population can be self-recovery afterward. If the compression of lung tissue has not been reduced during the observation process, and the degree of dyspnea has increased, it is necessary to consult a doctor to review the CT of the lungs to confirm the diagnosis of pneumothorax, and the aggravation of pneumothorax, it is necessary to carry out standardized treatment under the guidance of the clinician, so as to avoid delays in the condition.