Mediastinal pleural stretch refers to the adhesion of fibrous cords in the lungs to the pleura, causing local pleural depression, which is related to the abnormal condition of the lung tissues, and the main causes of the corresponding condition include intrapulmonary inflammation, intrapulmonary tuberculosis, and tumors. 1. Intra-pulmonary inflammation: the residual scar after the inflammation is absorbed will cause the fibrous cords to adhere to the pleura, resulting in local pleural pulling. 2. Intrapulmonary tuberculosis: the gradual stabilization of tuberculosis forms local fibrosis, which will also pull on the surrounding pleura and cause pleural depression. 3. Intrapulmonary tumor: mainly due to the outward growth of tumor cells or the surrounding reactive fibrosis causing thickening and adhesion of the adjacent pleura, resulting in the corresponding condition. Pleural pulling is only an imaging manifestation, but also needs to be combined with other indicators of the lesion to make a comprehensive judgment, once there is obvious chest pain, it is necessary to consult a doctor in time for observation, and to determine the specific condition and then do standardized treatment.