Positive mucin characterization test needs to identify the cause of the disease and target treatment. Mucin qualitative test is mainly used to identify exudate and leakage, positive may be exudate can be seen in tuberculous pleuritis, pneumonia-like pleural effusion, etc.. 1. Tuberculous pleurisy: mainly due to the exudate caused by infection with Mycobacterium tuberculosis, the treatment includes rest, symptomatic treatment, etc.; in order to prevent the pleural adhesion as soon as possible to pump out the effusion; active anti-tuberculosis treatment; for the person with serious systemic symptoms, oral glucocorticosteroids can be taken. 2. Pneumonic pleural effusion: the principle of treatment is to control the infection, drain the effusion and promote pulmonary reopening. Repeated pumping of pus, flushing the chest cavity and intrapleural injection of streptokinase, but for pleural fistula should not be flushed; at the same time to give high-energy, high-protein, vitamin-rich food. 3. Malignant pleural effusion: actively treat the primary disease; need repeated thoracocentesis to extract pus; thoracic injection of bioimmunosuppressants such as interferon, etc., but the prognosis of malignant pleural effusion is poor. Leakage and exudate identification not only rely on mucin qualitative test, there are other experiments together with a comprehensive analysis, should be in a professional hospital to improve the relevant examination, identify the causes of mucin qualitative test positive, timely targeted treatment.