There are many reasons for inspiratory lung pain, which should be specifically analyzed and judged as follows: 1, pleural chest pain: patients can be caused by pleurisy or a small amount of pleural effusion caused by pleural chest pain, which is characterized by deep inhalation leading to the affected side of the chest and ribs with pain or pain intensification. Patients with pleurisy are mostly caused by bacterial, or Mycobacterium tuberculosis infection of the pleura. 2, lung infectious diseases: attention should also be paid to exclude whether caused by lung infectious diseases, for example, pneumonia, tuberculosis infection range is large, close to the periphery of the lungs, this time in the inhalation of lung inflammation stimulation of the pleura and cause lung pain. 3, chest wall muscle disease: some patients can also be due to the chest wall muscle nerve pulling pain, rib chondromalacia, etc. caused by the chest pain. 4, Lung tumor: a few patients can also have such lung pain caused by lung tumor. Therefore, patients with lung pain during inspiration need to improve the relevant examination, especially lung CT to assist the diagnosis and treatment of the cause.