Common findings of thoracoscopy report 1, malignant tumor pleural metastasis Mainly manifested as nodules of different sizes on the patient’s pleura, pleural fluid is mostly bloody and large in volume, after aspiration, diffuse or isolated gray-white papillary, mulberry-like, cauliflower-like nodules of different sizes are seen on the wall or dirty pleura, on the surface of the nodules may be attached with necrotic tissue or blood crust, the tissue is usually more fragile and easy to bleed. When the pathological diagnosis is malignant tumor pleural metastasis, it is usually not an indication for surgical treatment. 2.Tuberculous pleurisy mainly manifests as yellowish pleural fluid, and a few of them are bloody or light red pleural fluid, the amount of which is not certain. If there are indistinct, lusterless, diffuse or lamellar congested edema, corn-like pin-cap size nodules or pink measles-like nodules in the pleura, it means it is in acute stage; if there are thick and thin yellowish or milky white fibrin deposits without blood vessels, containing more filamentous, reticular, membranous, columnar or lamellar adhesions in the wall and dirty pleura, forming multi-room sacs, it means it is in chronic stage. Patients need to be treated with systemic anti-tuberculosis drugs to control active tuberculosis and, if necessary, elective surgery. 3, connective tissue disease with pleural effusion Microscopic diffuse congestion, thickening and edema, pathological examination to exclude cancer and tuberculosis, the patient shows multi-system or organ damage, or combined with systemic lupus erythematosus, rheumatic pleurisy, rheumatoid pleurisy, Wegener’s granulomatosis, dry syndrome, eosinophilic pleurisy, post-myocardial infarction syndrome and other related symptoms. Drug treatment is usually carried out after a clear diagnosis. 4, pneumonia with pleural effusion Mainly manifested as diffuse microscopic pleural congestion, thickening and edema, the patient has symptoms related to pneumonia or post-pneumonia secondary pleurisy. Treatment requires infection control, drainage of pleural effusion and promotion of lung reopening to restore lung function. 5, abscess chest The main manifestation is pus-like fluid, patients with lung abscess or pneumonia and other infection-related symptoms. Acute abscess chest need to control the primary infection, according to the sensitivity of the causative bacteria to drugs, the choice of effective antibiotics. 6.Celiac disease mainly manifests as milk-like milky white, non-coagulable, odorless pleural fluid, containing celiac particles, and sometimes damage to the thoracic duct and its branches and rupture of the duct wall are seen. Light lesions can be treated by fasting, or spraying talcum powder in the chest cavity, or surgery in severe cases. 7.Spontaneous pneumothorax The alveoli are visible when observed, and the disease is mostly caused by the rupture of the alveoli, so conservative treatment or surgical thoracoscopic removal of the alveoli can be chosen. 8.Benign tumor manifesting as smooth surface of the mass, intact envelope and non-invasive, can be treated by continuing observation and follow-up or surgical operation to remove the tumor completely.