Pleurisy generally requires a combination of clinical signs, ancillary tests, and history. 1. Clinical symptoms: ① Chest pain is the most common symptom of pleurisy. ② Exudative pleurisy has clinical manifestations such as chest pain, cough, chest tightness and fever. ③Tuberculous pleurisy (dry or exudative) has chest pain, dry cough and dyspnea, and symptoms of tuberculosis toxicity, such as malaise, fever, and night sweats. 2. Auxiliary examination: ① chest CT examination can find pleural effusion, pleural adhesion and pleural thickening. ② Pleural fluid examination can identify pleurisy caused by inflammatory, tuberculosis or tumor. 3. Medical history: pleurisy is mostly caused by pneumonia, tuberculosis, lung cancer and immune system diseases. There are many diseases that cause pleurisy, and when pleurisy occurs, it is recommended to go to the hospital in time.